{"title":"Whole Sale -20% (Ella)","description":null,"products":[{"product_id":"osburn-950-wood-stove","title":"Osburn 950 Wood Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 2px solid #231F20; padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 2px solid #231F20; }\n  .km-desc .data-row .data-label { color: #4B484B; 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}\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 1.8 ft³ non-catalytic freestanding wood stove for small spaces — the Osburn-branded version of the SBI small-stove platform shared with the Enerzone Solution 1.4. EPA 2020 cordwood certified at 74% HHV efficiency, with a 17-inch maximum north-south log capacity, mobile-home and alcove approval, high-density refractory bricks, a stainless-steel heat shield over the C-Cast firestop, a top heat deflector that pushes heat toward the front of the stove, and decorative side panels that reduce clearances to combustibles.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of small homes, cabins, sunrooms, additions, finished basements, studio cottages, or one-room living spaces where wood-burning installation is permitted, roughly 250–900 sq ft, with reasonable insulation and access to seasoned hardwood at 15–20% moisture content. Mobile-home and manufactured-home owners — this stove is certified for mobile-home installation with the required fresh-air intake kit and insulated intake pipe.\u003c\/p\u003e\n\u003cp\u003eBuyers in tight installation spaces. The Osburn 950's compact footprint, alcove approval, decorative side panels, and clearance reductions when paired with heat shield AC02762 and a double-wall pipe connector make this one of the more flexible stoves in the small-firebox category — down to 2 1\/2\" rear\/side\/corner clearances in the most reduced configuration.\u003c\/p\u003e\n\u003cp\u003eBuyers choosing between the Osburn 950 and the Enerzone Solution 1.4. The Osburn 950 shares the same SBI small-stove performance platform as the Enerzone Solution 1.4: same firebox volume, same heat output, same efficiency, same emissions, same 17-inch north-south log capacity. The key reason to choose the Osburn 950 over the Solution 1.4 is the Osburn brand finish, styling package, and dealer\/parts network positioning, not a different heat-output class. Choose by the brand and finish you prefer.\u003c\/p\u003e\n\u003cp\u003eBuyers who reload often and want the easiest possible reload technique. The Osburn 950 loads north-south over depth — ends of the logs facing the door — instead of east-west across the width, the way many stoves in this class load. The N-S loading prevents logs from rolling out the front during reload and makes the reload itself a slide-in motion rather than a sideways wrestle.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for whole-house primary heat in larger or older homes. The manufacturer's stated 1,200 sq ft upper range is achievable only in well-insulated, open-plan, moderate-climate conditions; in real-world use this is a one-room or one-zone stove, not a whole-house heater.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting overnight burns. The 5-hour manufacturer maximum burn time is achievable on packed dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 3–4 hours. If you want to load at 9 PM and have meaningful heat at 6 AM, this is not the right tool — that is what a larger firebox, or a catalytic stove with a low-output mode, is built for.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting premium decorative cast-iron styling. The Osburn 950 is a clean, functional finish, but it is not an ornate cast-iron showpiece in the Jotul or premium-tier sense — the styling is sober and modern, not decorative.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.8 ft³ overall \/ 1.55 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSmall firebox sized for one room or one zone, not whole-house heat.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e45,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12,124–26,700 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e250–1,200 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 400–900 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e74% HHV \/ 79% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e80% optimum efficiency at low burn rate. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.8 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The stove is listed as compliant with the 2020 cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 5 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 3–4 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in north-south\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 in north-south\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLimited margin over 16-inch supply cuts. Verify your firewood supply before buying.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with a cast-iron door frame and decorative side panels. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eNotable features\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHeat shield + deflector\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eStainless-steel heat shield added to the C-Cast firestop and a top heat deflector that redirects heat toward the front of the stove. High-density refractory bricks. Decorative side panels that reduce clearances.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCeramic, 5\/32\" thick\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCeramic glass with air-wash, tested to 1,400 °F. Replacement glass kit SE74340 is 11 13\/16\" × 9 7\/8\" with gasket; the visible viewing surface is slightly smaller after the glass retainers and frames are installed. Replacement glass must match manufacturer specifications.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOptional, up to 100 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSold separately. SBI AC02023 blower with thermodisc for automatic on\/off based on stove temperature. Without the blower, heat distribution relies on radiant heat and natural convection; there is no forced-air circulation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Performs best on a 6-inch flue. New factory-built chimney systems must meet UL 103 HT (USA) or ULC S629 (Canada); a code-compliant masonry chimney may also be acceptable when properly lined or sized and verified by the installer\/AHJ. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStove dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 1\/4\" W × 27 7\/8\" D × 28 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOfficial overall appliance dimensions per manual section 2.3.1. The dimensions drawing also shows accessory and projection measurements; the 32 1\/4\" figure is with optional top decoration, not the base stove height.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14 1\/4\" W × 19 1\/8\" D × 11 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions. The depth-loading orientation (N-S) means logs run front-to-back over the 19 1\/8\" depth.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12\" W × 7 5\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening. The opening is sized for the recommended log length (16 in) loaded N-S.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e317 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer official Osburn product page. Plan for two-person handling. Remove loose internal components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eMobile-home and manufactured-home installations are supported with the required fresh-air intake kit and an insulated intake pipe (HVAC type, ULC S110 or UL 181 class 0\/1). Both are sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove install approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAlcove installation is approved with double-wall pipe connector. See the manual for specific clearances.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn 950 is approved for installation in residential homes, cabins, sunrooms, alcoves (with double-wall pipe connector), and mobile or manufactured homes (with the required fresh-air intake kit and insulated intake pipe). It is not approved for installation in factory-built (prefab) metal fireplaces or in any outdoor or unconditioned space.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\u003cp\u003eThe manual specifies clearances based on whether single-wall or double-wall pipe connector is used, and adjusts further for heat-shielded installations and lowered ceilings. With a single-wall pipe connector in a USA installation, the basic clearances are 12\" rear (A), 12\" side (B), and 11\" corner (C). With a double-wall pipe connector, those drop to 6\" \/ 12\" \/ 6\" respectively. With heat shield AC02762 and a double-wall connector, clearances reduce further to 2 1\/2\" on rear, side, and corner measurements, except where the clearance reduction is on the same side as the door handle; in that case, the manual requires at least 6\" from the side wall. Reduced clearances may also be achieved using approved wall heat-shield construction described in the manual; the construction rules and reduction percentages are specific and should be reviewed with your installer before purchase.\u003c\/p\u003e\n\u003cp\u003eAlways confirm the binding clearance figures against the certification label on the back of the stove and your local code. The manual's clearance tables include separate values for Canada and USA, single- and double-wall pipe, with and without heat shields, lowered ceilings, alcoves, and mobile homes.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFor the Osburn 950, the manual specifies \u003cstrong\u003eno R-factor required\u003c\/strong\u003e for floor protection — only a continuous, non-combustible material. Approved materials include steel of at least 0.015\" thickness, ceramic tiles sealed together with grout (over a continuous non-combustible sheet beneath), cement board, brick, or any other approved or listed material suited for floor protection. Tile alone is not sufficient — a continuous non-combustible sheet beneath the tile is required.\u003c\/p\u003e\n\u003cp\u003eFloor protection dimensions per the manual: in Canada, 18 inches forward of the door opening and 8 inches each side; in the USA, 16 inches forward of the door opening and 8 inches each side. No floor protection is required if the stove is installed on a non-combustible floor (concrete slab, for example).\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 950 performs best on a 6-inch chimney flue system. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. The stove may also be connected to a code-compliant masonry chimney, provided the chimney has either a clay liner or a suitably listed stainless-steel liner and the application is verified by a qualified installer. Per the manual, minimum chimney height is 12 feet. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally, subject to local code and installer verification.\u003c\/p\u003e\n\u003cp\u003eFor mobile-home installations, single-wall pipe is strictly forbidden — only double-wall pipe is permitted, and a fresh-air intake kit with insulated intake pipe is required. The fresh-air intake pipe (HVAC type) must meet ULC S110 or UL 181 class 0 or class 1.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air, for tight new-construction homes with mechanical ventilation, and is required for mobile-home installations. Use the AC01421 5-inch fresh-air intake kit for this stove. Mobile-home installations also require insulated 5-inch flex pipe such as AC02090 or equivalent ULC S110 \/ UL 181 class 0 or class 1 insulated HVAC pipe. The AC01349 airtight fresh-air intake register is an optional closable damper accessory for installations where local code, airtight-home design, or owner preference calls for one; do not close it while the stove is in use. A smoke detector and carbon monoxide detector are required in the room where the stove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 950 wood stove with welded carbon-steel firebox and cast-iron glazed door\u003c\/li\u003e\n\u003cli\u003eDecorative side panels\u003c\/li\u003e\n\u003cli\u003eStainless-steel heat shield over the C-Cast firestop\u003c\/li\u003e\n\u003cli\u003eTop heat deflector that redirects heat toward the front of the stove\u003c\/li\u003e\n\u003cli\u003eHigh-density refractory firebrick lining\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch chimney system — listed factory-built chimney for new installations, or an approved masonry chimney\/liner configuration where permitted by code and verified by the installer\/AHJ; required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eSingle-wall or double-wall pipe connector between the stove and chimney — double-wall is required for alcove and mobile-home installations and reduces clearance requirements\u003c\/li\u003e\n\u003cli\u003eHearth pad or floor protection sized to manual specifications, with continuous non-combustible sheet beneath any tile\u003c\/li\u003e\n\u003cli\u003eOptional 100 CFM blower with thermodisc heat sensor (SBI AC02023) — adds forced-air circulation to improve heat distribution; without it, heat moves by radiation and natural convection only\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01421) — required for mobile-home installations and for code or mechanical-ventilation requirements\u003c\/li\u003e\n\u003cli\u003e5-inch insulated flex pipe for fresh-air intake (SBI AC02090 or equivalent ULC S110 \/ UL 181 class 0 or class 1 insulated HVAC pipe) — required for mobile-home installations\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper (SBI AC01349) — useful where local code, airtight-home design, or owner preference calls for a closable outside-air damper; do not close while the stove is in use\u003c\/li\u003e\n\u003cli\u003eOptional rigid fire screen (SBI AC01420) — not permitted for open-door use in the United States or in Canadian provinces\/jurisdictions with particulate-emission limits; never permitted for use in a mobile home; never leave the stove unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional heat shield AC02762 for further clearance reductions to 2 1\/2\" on rear, side, and corner measurements (subject to the door-handle 6\" side-wall exception)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eStove-top or flue thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 45,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 12,000–27,000 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a fast 30-minute warm-up, 1–2 hours of strong sustained heat, then a gradual decline over the next 1–2 hours with a coal bed remaining. Total useful heat from one full pack is realistically 3–4 hours, occasionally approaching the 5-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed. Reload onto coals when heat output falls off and the cycle restarts.\u003c\/p\u003e\n\n\u003cp\u003eThe top heat deflector pushes heat toward the front of the stove rather than letting it climb the back wall, which gives noticeably warmer feet in the seating zone — useful in a small room where you actually sit close to the stove. The decorative side panels and the back heat shield over the C-Cast firestop allow the reduced clearances the manual specifies, letting the stove sit closer to walls without compromising safety.\u003c\/p\u003e\n\n\u003cp\u003eThe 17-inch maximum log capacity has limited margin over the 16-inch standard supplier cut. Confirm your firewood supply before buying — even a half-inch over forces awkward angled loading. The N-S loading orientation means logs are loaded into the depth of the firebox (over the 19 1\/8\" combustion chamber depth), with ends of the logs visible from the door. This prevents the log roll-out problem common in east-west small stoves and makes the reload itself a straight slide-in rather than a sideways wrestle.\u003c\/p\u003e\n\n\u003cp\u003eThe blower is optional and sold separately. With the blower installed, the included thermodisc senses stove temperature and runs the blower automatically when the stove is hot. Without the blower, heat distribution relies on radiant heat and natural convection; there is no forced-air circulation. The stove still operates safely and meets its rated efficiency without a blower — for one-room or one-zone primary use, radiant and natural convection are often enough, and the top heat deflector helps push that heat into the room. For distribution into adjacent rooms or open-plan spaces, the blower meaningfully helps.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic small stoves, not specific to Osburn.\u003c\/p\u003e\n\n\u003cp\u003eOfficial Osburn warranty-registration data currently shows 97% satisfaction among the last 8 registered owners.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eSame platform as the Enerzone Solution 1.4.\u003c\/strong\u003e The Osburn 950 and the Enerzone Solution 1.4 share the same SBI small-stove performance platform — same firebox, same heat output, same efficiency, same emissions, and same log capacity. The difference between them is brand finish and styling package, not heat-output class. The choice between them is a brand and aesthetics decision.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSmall firebox, short burns.\u003c\/strong\u003e A 1.8 ft³ non-cat stove gives you simpler operation and lower up-front cost than a hybrid or catalytic, but you pay for it with shorter burns. Plan on reloading every 2–3 hours during active heating and accepting that overnight will end at coals. If you want true overnight burns, step up to a larger firebox or to a catalytic alternative.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 1,200 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across small wood stoves is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~900 sq ft as primary winter heat, step up a firebox size — a 2.0+ ft³ firebox gives meaningfully more usable heat for the same operational effort.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower is not included.\u003c\/strong\u003e Unlike larger Osburn stoves and inserts in the catalog, the Osburn 950 ships without a blower; one must be ordered separately if you want forced-air heat distribution. For a one-room or one-zone install, radiant heat plus natural convection plus the top heat deflector is often sufficient.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the stove doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this stove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat small stoves in this firebox class. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this stove. Owners chasing always-clear glass on long, slow burns should look at catalytic technology.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSober styling, not ornate.\u003c\/strong\u003e The Osburn 950 has clean lines: a cast-iron door, decorative side panels, top deflector, and the Osburn brand finish. It is modern and functional rather than ornate cast-iron decorative. Buyers wanting heavy decorative cast-iron styling should look at Pacific Energy Vista LE or similar premium-tier alternatives.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first few fires cure the high-temperature paint and condition the internal components. Burn two or three small fires first, then build bigger, hotter fires until the paint smell is gone. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e Open the air control fully and build a small, hot kindling fire. The manual's EPA loading sequence uses small criss-crossed splits with kindling and paper on top, with the door left ajar until the kindling and first row of small wood are burning. In normal use, the goal is the same: establish draft quickly, get the firebox hot, then close the door once the fire is stable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located underneath the ash shelf. Push the handle completely to the left for HIGH (open); push completely to the right for LOW (closed). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 2–3 hours between reloads in active heating use; up to 4 hours for a final overnight pack with the air shut hard. For low\/medium EPA test loading, the manual describes using a 2-inch coal bed, five small north-south logs, the door ajar for about 5 minutes, then about 10 minutes with the air open before reducing the air. In normal use, apply the same principle rather than treating the exact log count as mandatory: load on an active coal bed, keep the air open until the load is fully engaged, then reduce gradually. Do not elevate the fire by using a grate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Osburn 950 uses a hollow-bottom firebox with an ash tray; ash is scooped manually from the front. Empty every 2–3 days during full-time heating. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the stove is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door, not just at the latch. The latch mechanism is also adjustable — turn the handle one counterclockwise turn (after removing the split pin with pliers) to increase pressure. Replacement materials run $20–$40; replacement is a 30-minute job. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance (if installed).\u003c\/strong\u003e Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, ash shelf, steel legs, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCarbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eOptional blower, heat sensors, switches, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and optional blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 1.4\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame SBI small-stove performance platform — same firebox, same heat output, same efficiency, same emissions, same 17\" N-S log capacity, same warranty schedule. The difference between the two is brand finish, styling package, and dealer\/parts positioning rather than a different heat-output class. Choose by the brand and finish you prefer.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eOsburn step-up model with a larger firebox (1.86 ft³ overall \/ 1.44 ft³ EPA), higher peak output (65,000 BTU\/hr), 18-inch log capacity, more heating area (500–1,800 sq ft), and optional 130 CFM blower. Choose the Osburn 1700 if you need more heating output and longer logs; choose the Osburn 950 for compact installations and tighter spaces where the smaller footprint and reduced clearances matter.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Vista LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand small stove. Sealed-firebox technology, longer real-world burn potential, premium build, higher price. Step-up choice for buyers who want the best small-stove operation and are willing to pay for it.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Osburn 950 is the Osburn-branded version of the SBI small-stove platform shared with the Enerzone Solution 1.4 — same firebox, same heat, same N-S loading. The choice between them is brand finish and styling. Compact enough for small spaces, mobile homes, and alcoves, and approved for all of them.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Default Title","offer_id":49274005160129,"sku":"OB00950+OA10249","price":2199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-950-wood-stove-front-ob00950.webp?v=1748290901"},{"product_id":"osburn-1700-wood-stove","title":"Osburn 1700 Wood Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; 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}\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 1.86 ft³ non-catalytic medium-sized freestanding wood stove — the Osburn-branded version of the SBI medium-stove platform shared with the Enerzone Solution 1.7. EPA 2020 cordwood certified at 68% HHV efficiency, with an 18-inch maximum east-west log capacity, mobile-home and alcove approval, 65,000 BTU\/hr maximum output, five base configurations (black traditional legs, black straight legs, black pedestal, brushed-nickel traditional legs, or brushed-nickel straight legs), required door overlay in Black or Brushed Nickel, optional glass ash lip, built-in ash drawer, top heat deflector, and an optional 130 CFM variable-speed blower.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of medium-sized homes, cabins, well-insulated open-plan single-story spaces, or finished basement\/main-floor combinations of roughly 800–1,600 sq ft, with reasonable insulation and access to seasoned hardwood at 15–20% moisture content. Mobile-home and manufactured-home owners — this stove is certified for mobile-home installation with the required fresh-air intake kit and insulated intake pipe.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the Osburn brand finish, dealer\/parts network, and the configurable styling that the Osburn 1700 offers. Five base configurations across two finish colors (Black or Brushed Nickel), two door overlay finishes, and optional glass ash lip — the 1700 has more styling configuration than nearly any other stove in this firebox size class.\u003c\/p\u003e\n\u003cp\u003eBuyers stepping up from the small-stove platform (Osburn 950 or Enerzone Solution 1.4) who need more heat output, longer log capacity, and longer burn cycles. The Osburn 1700 covers heating areas from 500 sq ft on the low end up to 1,800 sq ft on the manufacturer's high end, with a usable tested output band of 9,800–52,200 BTU\/hr.\u003c\/p\u003e\n\u003cp\u003eBuyers who want east-west loading and the wider 17 1\/4-inch door opening that comes with it. The Osburn 1700 is built around a wider-than-it-is-deep firebox; logs go in across the width, sides visible from the door. This is the conventional wood-stove loading orientation — most owners coming from older stoves already know how to load this way.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for whole-house primary heat in older, drafty, or large homes. The manufacturer's stated 1,800 sq ft upper range is achievable only in well-insulated, open-plan, moderate-climate conditions; in real-world use, comfortable primary heat tops out around 1,400–1,500 sq ft for most homes.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 8+ hour overnight burns. The 7-hour manufacturer maximum burn time is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 5–6 hours. For longer burns, step up to a larger non-cat firebox (2.5+ ft³) or to a catalytic stove with a true low-output mode.\u003c\/p\u003e\n\u003cp\u003eNot for buyers wanting the smaller stove footprint and reduced clearances of the Osburn 950 or Solution 1.4. The Osburn 1700 is meaningfully larger; if you're heating under 1,000 sq ft and need the smaller stove footprint or N-S loading, look at the 950 instead.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.86 ft³ overall \/ 1.44 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Medium-sized firebox sized for zone heating across 500–1,800 sq ft. The overall figure includes a buffer zone above the EPA loading line; the 1.44 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e65,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e9,800–52,200 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. Wide operating band — the low end is genuinely low for a stove this size, useful for shoulder-season heating.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–1,800 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 800–1,500 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e68% HHV \/ 73% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e76% optimum overall efficiency at low burn rate; 75% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The stove is listed as compliant with the 2020 cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 7 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 5–6 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e2-inch margin over the recommended length. Logs load across the width of the firebox, sides visible from the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with an arched cast-iron door frame, decorative side panels, and the Osburn brand finish. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRequired configuration\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBase + door overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBase configured at order: black traditional legs, black straight legs, black pedestal, brushed-nickel traditional legs, or brushed-nickel straight legs. Door overlay required in Black (OA10249) or Brushed Nickel (OA10250). Optional glass ash lip available separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eNotable features\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHeat shield + deflector\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eStainless-steel heat shield added to the C-Cast baffle and a top heat deflector that redirects heat toward the front of the stove. High-density refractory bricks. Built-in ash drawer. Decorative side panels that reduce clearances.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F. Manual parts list item #51 confirms the C-Cast baffle assembly.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 3\/4\" × 10 7\/16\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eArched ceramic glass with air-wash, 5\/32\" (4 mm) thick, tested to 1,400 °F. Replacement glass must be a SCHOTT ceramic with the same specification — no substitute materials.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eOptional, 130 CFM variable speed\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSold separately. SBI AC01000 130 CFM blower with variable speed control and thermodisc heat sensor for automatic on\/off based on stove temperature. Without the blower, heat distribution relies on radiant heat and natural convection; there is no forced-air circulation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Performs best on a 6-inch flue. New factory-built chimney systems must meet UL 103 HT (USA) or ULC S629 (Canada); a code-compliant masonry chimney may also be acceptable when properly lined or sized and verified by the installer\/AHJ. Minimum chimney height must follow the current manual, certification label, installer verification, and local code — Osburn documentation may list different minimums by source and configuration. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e19 5\/8\" W × 13 1\/2\" D × 11 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manual. Wider than deep, which is what enables 18\" east-west loading.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/4\" W × 8 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening. The wide door accommodates 18-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eMobile-home and manufactured-home installations are supported with the required fresh-air intake kit and an insulated intake pipe (HVAC type, ULC S110 or UL 181 class 0\/1). Both are sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove install approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAlcove installation is approved with double-wall pipe connector. See the manual for specific clearances.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn 1700 is approved for installation in residential homes, cabins, sunrooms, alcoves (with double-wall pipe connector), and mobile or manufactured homes (with the required fresh-air intake kit and insulated intake pipe). It is not approved for installation in factory-built (prefab) metal fireplaces or in any outdoor or unconditioned space.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\u003cp\u003eThe manual specifies clearances based on whether single-wall or double-wall pipe connector is used, and adjusts further for heat-shielded installations and lowered ceilings. With a single-wall pipe connector in a USA installation, the basic clearances are 13\" rear (A), 10\" side (B), and 12\" corner (C). With a double-wall pipe connector, those drop to 6\" \/ 10\" \/ 6\" respectively. With heat shield AC02762 and a double-wall connector, clearances reduce further to 2 1\/2\" on rear, side, and corner measurements, except where the clearance reduction is on the same side as the door handle; in that case, the manual requires at least 6\" from the side wall. Reduced clearances may also be achieved using approved wall heat-shield construction described in the manual; the construction rules and reduction percentages are specific and should be reviewed with your installer before purchase.\u003c\/p\u003e\n\u003cp\u003eAlways confirm the binding clearance figures against the certification label on the back of the stove and your local code. The manual's clearance tables include separate values for Canada and USA, single- and double-wall pipe, with and without heat shields, lowered ceilings, alcoves, and mobile homes.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFor the Osburn 1700, the manual specifies \u003cstrong\u003eno R-factor required\u003c\/strong\u003e for floor protection — only a continuous, non-combustible material. Approved materials include steel of at least 0.015\" thickness, ceramic tiles sealed together with grout (over a continuous non-combustible sheet beneath), cement board, brick, or any other approved or listed material suited for floor protection. Tile alone is not sufficient — a continuous non-combustible sheet beneath the tile is required.\u003c\/p\u003e\n\u003cp\u003eFloor protection dimensions per the manual: in Canada, 18 inches forward of the door opening and 8 inches each side; in the USA, 16 inches forward of the door opening and 8 inches each side. In Canada, the manual also requires ember protection extending at least 18 inches in front of any door and 8 inches on other sides per CSA B365. No floor protection is required if the stove is installed on a non-combustible floor (concrete slab, for example).\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 1700 performs best on a 6-inch chimney flue system. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. The stove may also be connected to a code-compliant masonry chimney, provided the chimney has either a clay liner or a suitably listed stainless-steel liner and the application is verified by a qualified installer. Minimum chimney height must follow the current manual, certification label, installer verification, and local code — Osburn documentation may list different minimums by source and configuration. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally, subject to local code and installer verification.\u003c\/p\u003e\n\u003cp\u003eFor mobile-home installations, single-wall pipe is strictly forbidden — only double-wall pipe is permitted, and a fresh-air intake kit with insulated intake pipe is required. The fresh-air intake pipe (HVAC type) must meet ULC S110 or UL 181 class 0 or class 1.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air, for tight new-construction homes with mechanical ventilation, and is required for mobile-home installations. Use the AC01291 5-inch fresh-air intake kit for stoves on legs, or the AC01336 for stoves on pedestal. Mobile-home installations also require insulated 5-inch flex pipe (ULC S110 \/ UL 181 class 0 or class 1 insulated HVAC pipe). A smoke detector and carbon monoxide detector are required in the room where the stove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 1700 wood stove (OB01700) with welded carbon-steel firebox and arched cast-iron glazed door\u003c\/li\u003e\n\u003cli\u003eChoice of base, configured at order: black traditional legs, black straight legs, black pedestal, brushed-nickel traditional legs, or brushed-nickel straight legs\u003c\/li\u003e\n\u003cli\u003eChoice of door overlay, configured at order: Black (OA10249) or Brushed Nickel (OA10250)\u003c\/li\u003e\n\u003cli\u003eBuilt-in ash drawer (sized to the base configuration)\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eStainless-steel heat shield over the C-Cast baffle\u003c\/li\u003e\n\u003cli\u003eTop heat deflector that redirects heat toward the front of the stove\u003c\/li\u003e\n\u003cli\u003eHigh-density refractory firebrick lining\u003c\/li\u003e\n\u003cli\u003eDecorative side panels\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch chimney system — listed factory-built chimney for new installations, or an approved masonry chimney\/liner configuration where permitted by code and verified by the installer\/AHJ; required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eSingle-wall or double-wall pipe connector between the stove and chimney — double-wall is required for alcove and mobile-home installations and reduces clearance requirements\u003c\/li\u003e\n\u003cli\u003eHearth pad or floor protection sized to manual specifications, with continuous non-combustible sheet beneath any tile\u003c\/li\u003e\n\u003cli\u003eOptional 130 CFM variable-speed blower with thermodisc heat sensor (SBI AC01000) — adds forced-air circulation to improve heat distribution; without it, heat moves by radiation and natural convection only\u003c\/li\u003e\n\u003cli\u003eOptional glass ash lip — visible glass strip at the door opening; sold separately\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01291 for legs, AC01336 for pedestal) — required for mobile-home installations and for code or mechanical-ventilation requirements\u003c\/li\u003e\n\u003cli\u003e5-inch insulated flex pipe for fresh-air intake (ULC S110 \/ UL 181 class 0 or class 1 insulated HVAC pipe) — required for mobile-home installations\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper — useful where local code, airtight-home design, or owner preference calls for a closable outside-air damper; do not close while the stove is in use\u003c\/li\u003e\n\u003cli\u003eOptional rigid fire screen (SBI AC01299) — not permitted for open-door use in the United States or in Canadian provinces\/jurisdictions with particulate-emission limits; never permitted for use in a mobile home; never leave the stove unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional heat shield AC02762 for further clearance reductions to 2 1\/2\" on rear, side, and corner measurements (subject to the door-handle 6\" side-wall exception)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eStove-top or flue thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 65,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 9,800–52,200 BTU\/hr band per the CSA B415.1-10 stack-loss method. That low-end figure is genuinely useful — 9,800 BTU\/hr is shoulder-season territory, when a smaller stove with a higher minimum output would overheat the room.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a fast 30–45 minute warm-up, 2–3 hours of strong sustained heat, then a gradual decline over the next 2–3 hours with a coal bed remaining. Total useful heat from one full pack is realistically 5–6 hours, occasionally approaching the 7-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed. Reload onto coals when heat output falls off and the cycle restarts.\u003c\/p\u003e\n\n\u003cp\u003eThe top heat deflector pushes heat toward the front of the stove rather than letting it climb the back wall, which gives noticeably warmer feet in the seating zone — useful in a room where you actually sit close to the stove. The decorative side panels and the rear heat shield allow the reduced clearances the manual specifies, letting the stove sit closer to walls without compromising safety.\u003c\/p\u003e\n\n\u003cp\u003eThe east-west loading is the conventional loading direction for stoves in this size class. The 17 1\/4\" door opening accommodates 18-inch logs comfortably; the 13 1\/2\" interior firebox depth handles a layered E-W load with room to breathe. The Osburn 1700 ships with steel andirons at the front of the firebox — per the manual's EPA loading procedure, the front log should sit just behind the andirons to control the burn rate.\u003c\/p\u003e\n\n\u003cp\u003eThe 130 CFM optional blower is a meaningful step up from the smaller stoves in the catalog. With the blower installed, the variable-speed control lets you dial CFM up or down, and the thermodisc senses stove temperature and runs the blower automatically when the stove is hot. Without the blower, heat distribution relies on radiant heat and natural convection plus the top deflector; for a one-room install, that's often enough. For distribution into adjacent rooms or open-plan spaces, the blower meaningfully helps.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic stoves, not specific to Osburn.\u003c\/p\u003e\n\n\u003cp\u003eOfficial Osburn warranty-registration data currently shows 96% satisfaction among the last 35 registered owners.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eSame platform as the Enerzone Solution 1.7.\u003c\/strong\u003e The Osburn 1700 and the Enerzone Solution 1.7 share the same SBI medium-stove performance platform — same firebox volume, same combustion-chamber dimensions, same heat output class, same log capacity. The difference between them is brand finish, configurable styling options (door overlays, leg\/pedestal styles, Black\/Brushed Nickel finishes, optional glass ash lip), and dealer\/parts network positioning. The Osburn 1700 also lists a 130 CFM variable-speed blower as the optional accessory; the Solution 1.7's blower option is in a different CFM class. Choose by the brand, finish, and configurability you prefer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMedium-size firebox, medium burn time.\u003c\/strong\u003e A 1.86 ft³ non-cat stove gives you meaningful heat output across 800–1,500 sq ft, but the 7-hour manufacturer maximum is a maximum — useful heat realistically tops out at 5–6 hours. If you want true 8–10 hour overnight burns, step up to a 2.5+ ft³ non-cat or to a catalytic stove with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 1,800 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across medium stoves is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~1,500 sq ft as primary winter heat in a cold climate or older home, step up a firebox size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBase and door overlay are one-time decisions.\u003c\/strong\u003e Both the base configuration and the door overlay finish are configured at order, not field-swappable. The combinations let the stove fit many room layouts and aesthetics, but choose the configuration that matches the room you're putting it in — measure the desired height and confirm the look before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2.4 g\/hr emissions is mid-pack for the category.\u003c\/strong\u003e The Osburn 1700 is well within the EPA 2020 cordwood limit (2.5 g\/hr) but is not class-leading on emissions. Buyers who specifically want a low-emissions stove for an EPA non-attainment county should compare against premium-tier cross-shops that test below 1.5 g\/hr.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the stove doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this stove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat stoves in this firebox class. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this stove. Owners chasing always-clear glass on long, slow burns should look at catalytic technology.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefined but configurable, not ornate.\u003c\/strong\u003e The Osburn 1700 has clean modern lines, an arched cast-iron door, decorative side panels, and the Osburn-tier finish detail. With brushed-nickel overlays it reads more contemporary; with traditional cast-iron legs it reads more classic. It is configurable but not ornate. Buyers wanting heavy decorative cast-iron styling should look at premium-tier alternatives.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first few fires cure the high-temperature paint and condition the internal components. Burn two or three small fires first, then build bigger, hotter fires until the paint smell is gone. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e Open the air control fully and build a small, hot kindling fire. The manual's EPA loading sequence uses split start-up fuel in three rows criss-crossed at 45 degrees, kindling on top in three rows from largest to smallest, then newspaper sheets on top. Let the door stand at 90 degrees for about a minute, then close. In normal use, the goal is the same: establish draft quickly, get the firebox hot, then close the door once the fire is stable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located underneath the ash shelf. Push the handle completely to the left for HIGH (open); push completely to the right for LOW (closed). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. The manual recommends closing the primary air control by small increments (about 1\/16 inch at a time) over 4–15 minutes after a reload — too fast and the fire smolders.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–4 hours between reloads in active heating use; up to 6 hours for a final overnight pack with the air shut hard. For loading, follow the same principle the manual describes for EPA testing: three logs on the coal bed in east-west orientation with the front log behind the andirons, two more logs on top angled slightly. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load onto the coal bed, close the door, and run the air open until the load is fully engaged before reducing the air gradually. Do not elevate the fire by using a grate. Do not put logs in the marked X area between the glass and primary air channel.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Osburn 1700 has a built-in ash drawer system — the ash plug in the firebox floor opens to drop ash into the drawer below. Per the manual, empty every 2–3 days during full-time heating. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the stove is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door, not just at the latch. The latch mechanism is also adjustable — turn the handle one counterclockwise turn (after removing the split pin with pliers) to increase pressure. Replacement materials run $20–$40; replacement is a 30-minute job. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance (if installed).\u003c\/strong\u003e Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, ash shelf, steel legs, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCarbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eOptional blower, heat sensors, switches, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and optional blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 1.7\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame SBI medium-stove performance platform — same firebox class, same combustion chamber, same 18\" E-W log capacity, same warranty schedule, same EPA 2020 certification class. The Solution 1.7 is the plainer Enerzone-tier version with engraved-groove side panels and an arched cast-iron door, six leg\/pedestal options at the Enerzone price point. The Osburn 1700 adds the Osburn brand finish, required door overlay in Black or Brushed Nickel, optional glass ash lip, and the 130 CFM variable-speed blower option. Choose by the brand, configuration, and finish you prefer.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 950\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller Osburn-tier model. 1.8 ft³ firebox, 45,000 BTU\/hr max, 250–1,200 sq ft heating range, 17\" N-S log capacity. Choose the Osburn 950 for smaller spaces under 1,000 sq ft and the practical N-S loading; choose the Osburn 1700 for more heating output, 18\" E-W logs, longer burn time, and the configurable base and door-overlay options.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Super 27\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the medium-stove class. Up to 2,200 sq ft heating range, 2.0 ft³ firebox, sealed-firebox technology, premium build, higher price. The most-mentioned cross-shop on hearth-enthusiast forums for buyers comparing mid-size non-cat stoves. Higher price; longer real-world burn potential.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Osburn 1700 is the medium-sized workhorse in the Osburn line. Heats up to 1,800 sq ft, loads east-west with 18-inch logs, and lets you pick the base and door finish so it fits the room instead of fighting it. Configure it once, install it right, burn good wood, and it does the job for years.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Traditional Black","offer_id":49274031833281,"sku":"OB01700+OA10249+OA10247","price":2749.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Pedestal","offer_id":49274046677185,"sku":"OB01700+OA10249+OA10244","price":2804.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Black","offer_id":49274046709953,"sku":"OB01700+OA10249+OA10245","price":2969.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Traditional Brushed Nickel","offer_id":49274046742721,"sku":"OB01700+OA10249+OA10248","price":3189.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Brushed Nickel","offer_id":49274046775489,"sku":"OB01700+OA10249+OA10246","price":3244.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Traditional Black","offer_id":49274031866049,"sku":"OB01700+OA10250+OA10247","price":2914.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Pedestal","offer_id":49274046808257,"sku":"OB01700+OA10250+OA10244","price":2969.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Black","offer_id":49274046841025,"sku":"OB01700+OA10250+OA10245","price":3134.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Traditional Brushed Nickel","offer_id":49274046873793,"sku":"OB01700+OA10250+OA10248","price":3354.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Brushed Nickel","offer_id":49274046906561,"sku":"OB01700+OA10250+OA10246","price":3409.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-1700-wood-stove-front-view_3aa89df1-b68c-4e11-8dc9-cb5b3d492d36.webp?v=1748290775"},{"product_id":"2000-wood-stove","title":"Osburn 2000 Wood Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 2px solid #231F20; padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 2px solid #231F20; }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .callout { background: #D1B382; color: #231F20; padding: 16px 18px; margin: 20px 0; font-size: 13px; line-height: 1.55; }\n  .km-desc .callout-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; margin-bottom: 8px; display: block; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.4 ft³ non-catalytic medium-large freestanding wood stove — the Osburn-branded version of the SBI medium-large stove platform shared with the Enerzone Solution 2.3. EPA 2020 cordwood certified at 72% HHV efficiency, with a 20-inch maximum east-west log capacity, up to 2,100 sq ft of heating area, an 8-hour maximum burn time, mobile-home and alcove approval, 75,000 BTU\/hr maximum output, a 130 CFM variable-speed blower included, required door overlay in Black or Brushed Nickel, and a configurable base (multiple leg kits in Black or Brushed Nickel, or pedestal).\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of medium-to-larger homes, well-insulated open-plan two-story spaces, or one stove serving as primary winter heat across 1,200–1,800 sq ft of conditioned space, with reasonable insulation and access to seasoned hardwood at 15–20% moisture content. Mobile-home and manufactured-home owners — this stove is certified for mobile-home installation with the required fresh-air intake kit and insulated intake pipe.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the Osburn brand finish, the configurable styling, and the 130 CFM blower included as standard. The Osburn 2000 ships with the blower included rather than as a separate accessory — a meaningful platform difference vs the Enerzone Solution 2.3 sibling, where the blower is optional and sold separately.\u003c\/p\u003e\n\u003cp\u003eBuyers stepping up from the Osburn 1700 medium-stove platform who want a meaningful firebox jump, longer 20-inch logs, and longer burn cycles. The Osburn 2000 covers heating areas from 500 sq ft on the low end up to 2,100 sq ft on the manufacturer's high end, with a tested output band of 14,200–44,500 BTU\/hr.\u003c\/p\u003e\n\u003cp\u003eBuyers who want east-west loading and the wider 17 1\/2-inch door opening that comes with it. The Osburn 2000 is built around a wider-than-it-is-deep firebox; logs go in across the width, sides visible from the door. Per the manual, the firebox depth of 16 1\/2\" also accepts north-south loading for packed high-output cold-weather cycles.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers heating under 1,000 sq ft. The Osburn 2000 is meaningfully larger than the Osburn 950 or 1700; in a small room it will overheat at almost any meaningful burn rate. If you're heating a small space, look at the Osburn 950 or 1700 instead.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. The 8-hour manufacturer maximum is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 6–7 hours. For longer burns, step up to a 3.0+ ft³ firebox or to a catalytic stove with a real low-output mode.\u003c\/p\u003e\n\u003cp\u003eNot for buyers wanting heavy decorative cast-iron styling. The Osburn 2000 has clean lines, an arched cast-iron door, and the Osburn brand finish, but it is not an ornate cast-iron showpiece. Buyers who want furniture-grade cast iron should look at premium-tier alternatives.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 ft³ overall \/ 1.95 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Medium-large firebox sized for zone heating across 500–2,100 sq ft. The overall figure includes a buffer zone above the EPA loading line; the 1.95 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,200–44,500 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,200–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e72% HHV \/ 77% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e79% optimum overall efficiency at low burn rate; 76% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.3 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The stove is listed as compliant with the 2020 cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e4-inch margin over the recommended length — meaningful for buyers with access to longer-cut firewood. Logs load across the width of the firebox, sides visible from the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with an arched cast-iron door, decorative side panels, and the Osburn brand finish. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRequired configuration\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBase + door overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBase configured at order: multiple cast-iron leg styles in Black or Brushed Nickel, or pedestal — each with built-in ash drawer. Door overlay required in Black or Brushed Nickel.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eViewable glass surface, ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCeramic glass with air-wash, 5\/32\" (4 mm) thick, tested to 1,400 °F. Replacement glass kit per manual is 17 13\/16\" × 11 1\/16\" SCHOTT ceramic — no substitute materials.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, up to 130 CFM variable speed\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Variable-speed control with rheostat (HI\/LO\/OFF). Optional thermodisc heat sensor sold separately for automatic on\/off based on stove temperature. Regular blower use can provide up to a 2% efficiency boost per the manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Performs best on a 6-inch flue. New factory-built chimney systems must meet UL 103 HT (USA) or ULC S629 (Canada); a code-compliant masonry chimney may also be acceptable when properly lined or sized and verified by the installer\/AHJ. Minimum chimney height must follow the current manual, certification label, installer verification, and local code. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21\" W × 16 1\/2\" D × 11 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manual. Wider than deep; the 16 1\/2\" depth is generous enough to accept N-S loading for packed cold-weather cycles in addition to the default E-W loading.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/2\" W × 9\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening. The wide door accommodates 20-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e390 lb (without option)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Installed weight: 368 lb with legs, 377 lb with pedestal. Plan for two-person handling.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eMobile-home and manufactured-home installations are supported with the required fresh-air intake kit and an insulated intake pipe (HVAC type, ULC S110 or UL 181 class 0\/1). Both are sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove install approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAlcove installation is approved with double-wall pipe connector. See the manual for specific clearances.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn 2000 is approved for installation in residential homes, cabins, sunrooms, alcoves (with double-wall pipe connector), and mobile or manufactured homes (with the required fresh-air intake kit and insulated intake pipe). It is not approved for installation in factory-built (prefab) metal fireplaces or in any outdoor or unconditioned space.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\u003cp\u003eThe manual specifies clearances based on whether single-wall or double-wall pipe connector is used, and adjusts further for heat-shielded installations and lowered ceilings. The manual's clearance tables include separate values for Canada and USA, single- and double-wall pipe, with and without heat shields, lowered ceilings, alcoves, and mobile homes. Where the clearance reduction is on the same side as the door handle, the manual requires a minimum 6-inch clearance from the side wall — review with your installer before purchase. Reduced clearances may also be achieved using approved wall heat-shield construction described in the manual; the construction rules and reduction percentages are specific to the configuration.\u003c\/p\u003e\n\u003cp\u003eAlways confirm the binding clearance figures against the certification label on the back of the stove and your local code.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFor the Osburn 2000, the manual specifies \u003cstrong\u003eno R-factor required\u003c\/strong\u003e for floor protection — only a continuous, non-combustible material. Approved materials include steel of at least 0.015\" thickness, ceramic tiles sealed together with grout (over a continuous non-combustible sheet beneath), cement board, brick, or any other approved or listed material suited for floor protection. Tile alone is not sufficient — a continuous non-combustible sheet beneath the tile is required.\u003c\/p\u003e\n\u003cp\u003eFloor protection dimensions per the manual: in Canada, 18 inches forward of the door opening and 8 inches each side; in the USA, 16 inches forward of the door opening and 8 inches each side. In Canada, the manual also requires ember protection extending at least 18 inches in front of any door and 8 inches on other sides per CSA B365. No floor protection is required if the stove is installed on a non-combustible floor (concrete slab, for example).\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 2000 performs best on a 6-inch chimney flue system. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. The stove may also be connected to a code-compliant masonry chimney, provided the chimney has either a clay liner or a suitably listed stainless-steel liner and the application is verified by a qualified installer. Minimum chimney height must follow the current manual, certification label, installer verification, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally, subject to local code and installer verification.\u003c\/p\u003e\n\u003cp\u003eFor mobile-home installations, single-wall pipe is strictly forbidden — only double-wall pipe is permitted, and a fresh-air intake kit with insulated intake pipe is required. The fresh-air intake pipe (HVAC type) must meet ULC S110 or UL 181 class 0 or class 1.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air, for tight new-construction homes with mechanical ventilation, and is required for mobile-home installations. Mobile-home installations also require insulated 5-inch flex pipe (ULC S110 \/ UL 181 class 0 or class 1 insulated HVAC pipe). A smoke detector and carbon monoxide detector are required in the room where the stove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 2000 wood stove (OB02015) with welded carbon-steel firebox and arched cast-iron glazed door\u003c\/li\u003e\n\u003cli\u003eChoice of base, configured at order: multiple cast-iron leg styles in Black or Brushed Nickel, or pedestal — each with built-in ash drawer\u003c\/li\u003e\n\u003cli\u003eChoice of door overlay, configured at order: Black or Brushed Nickel\u003c\/li\u003e\n\u003cli\u003e130 CFM variable-speed blower with rheostat control (HI\/LO\/OFF)\u003c\/li\u003e\n\u003cli\u003eDecorative side panels\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eHigh-density refractory firebrick lining\u003c\/li\u003e\n\u003cli\u003eAsh lip pan\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch chimney system — listed factory-built chimney for new installations, or an approved masonry chimney\/liner configuration where permitted by code and verified by the installer\/AHJ; required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eSingle-wall or double-wall pipe connector between the stove and chimney — double-wall is required for alcove and mobile-home installations and reduces clearance requirements\u003c\/li\u003e\n\u003cli\u003eHearth pad or floor protection sized to manual specifications, with continuous non-combustible sheet beneath any tile\u003c\/li\u003e\n\u003cli\u003eOptional thermodisc heat sensor — automatic on\/off control for the included blower based on stove temperature\u003c\/li\u003e\n\u003cli\u003eOptional ash lip glass panel — visible glass strip at the door opening\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit — required for mobile-home installations and for code or mechanical-ventilation requirements; separate part numbers for stoves on legs vs pedestal\u003c\/li\u003e\n\u003cli\u003e5-inch insulated flex pipe for fresh-air intake (ULC S110 \/ UL 181 class 0 or class 1 insulated HVAC pipe) — required for mobile-home installations\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper — useful where local code, airtight-home design, or owner preference calls for a closable outside-air damper; do not close while the stove is in use\u003c\/li\u003e\n\u003cli\u003eOptional rigid fire screen (SBI AC01315) — not permitted for open-door use in the United States or in Canadian provinces\/jurisdictions with particulate-emission limits; never permitted for use in a mobile home; never leave the stove unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional heat shield for further clearance reductions (subject to the door-handle 6\" side-wall exception per manual)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eStove-top or flue thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 14,200–44,500 BTU\/hr band per the CSA B415.1-10 stack-loss method — a usable range that covers shoulder-season heating on the low end and serious cold-snap output on the high end.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a fast 30–45 minute warm-up, 2–3 hours of strong sustained heat, then a gradual decline over the next 3–4 hours with a coal bed remaining. Total useful heat from one full pack is realistically 6–7 hours, occasionally approaching the 8-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed. Reload onto coals when heat output falls off and the cycle restarts.\u003c\/p\u003e\n\n\u003cp\u003eThe 20-inch maximum log capacity is the meaningful differentiator vs the smaller Osburn 1700 (18 in). Most firewood suppliers cut to 16 inches as standard, but 20-inch capacity gives real margin — a buyer with access to longer-cut wood gets four extra inches of fuel per log without juggling. East-west loading is the default; per the manual, north-south loading is also possible thanks to the 16 1\/2\" firebox depth, and the manual specifically recommends N-S loading for packed cold-weather cycles where you want to fit the maximum amount of wood.\u003c\/p\u003e\n\n\u003cp\u003eThe included 130 CFM variable-speed blower is a meaningful step up from buying the Osburn 1700 or Osburn 950 and adding a blower separately. The rheostat lets you dial speed from HIGH down to LOW or fully OFF. Per the manual, allow the stove to reach operating temperature (approximately one hour from a cold start) before turning on the blower; turning the blower on too early pulls heat away from the firebox during the start-up phase and slows the build-up to clean combustion. With the optional thermodisc installed, the blower starts and stops automatically based on stove temperature — leave the rheostat at the desired speed setting and let the thermodisc handle the rest.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic stoves, not specific to Osburn.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eSame platform as the Enerzone Solution 2.3.\u003c\/strong\u003e The Osburn 2000 and the Enerzone Solution 2.3 share the same SBI medium-large stove performance platform — same firebox, same combustion-chamber dimensions, same 20-inch log capacity, same 75,000 BTU\/hr maximum output. The Osburn 2000 includes the 130 CFM blower as standard (on the Solution 2.3 it's optional and sold separately), adds the required door overlay configuration in Black or Brushed Nickel, and brings the Osburn brand finish and dealer\/parts network. Choose the Osburn 2000 if you want the blower included, the Osburn brand, and the required-overlay finish; choose the Solution 2.3 for the Enerzone price point without the required overlay step.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMedium-large firebox, medium-long burn time.\u003c\/strong\u003e A 2.4 ft³ non-cat stove gives you meaningful primary-heat capability across 1,200–1,800 sq ft, with realistic 6–7 hour burn cycles. If you want true 10+ hour overnight burns or 2,500+ sq ft primary heating, step up to a 3.0+ ft³ firebox or to a catalytic stove with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 2,100 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across medium-large stoves is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~1,800 sq ft as primary winter heat in a cold climate or older home, step up a firebox size — the Osburn 3500 gives meaningfully more usable heat for the same operational effort.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBase and door overlay are one-time decisions.\u003c\/strong\u003e Both the base configuration and the door overlay finish are configured at order, not field-swappable. The combinations let the stove fit many room layouts and aesthetics, but choose the configuration that matches the room you're putting it in — measure the desired height and confirm the look before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2.3 g\/hr emissions is mid-pack for the category.\u003c\/strong\u003e The Osburn 2000 is well within the EPA 2020 cordwood limit (2.5 g\/hr) but is not class-leading on emissions. Buyers who specifically want a low-emissions stove for an EPA non-attainment county should compare against the Osburn Matrix (same platform, lower published emissions) or premium-tier cross-shops that test below 1.5 g\/hr.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the stove doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this stove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat stoves. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this stove. Owners chasing always-clear glass on long, slow burns should look at catalytic technology.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefined but configurable, not ornate.\u003c\/strong\u003e The Osburn 2000 has clean modern lines, an arched cast-iron door, decorative side panels, and the Osburn-tier finish. With brushed-nickel overlays it reads more contemporary; with black cast-iron legs it reads more classic. It is configurable but not ornate. Buyers wanting heavy decorative cast-iron styling should look at premium-tier alternatives.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first few fires cure the high-temperature paint and condition the internal components. Burn two or three small fires first, then build bigger, hotter fires until the paint smell is gone. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual recommends a top-down fire as the most effective method: two small (~1\") pieces on each side of the firebox, crumpled newspaper between them, more small pieces crossed over the newspaper, then five medium-sized (2-3\") pieces crossed on top in two layers. Open the air control fully and light the newspaper. Leave the door slightly ajar for about five minutes. Close the door when the fire is well lit, keeping the air intake control open. Add larger pieces once the medium pieces are burning well.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located underneath the ash shelf. Push the handle completely to the left for HIGH (open); push completely to the right for LOW (closed). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. The manual specifies closing the primary air control by small increments (about 1\/16 inch at a time) between 4 and 15 minutes after a reload — too fast and the fire smolders.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–4 hours between reloads in active heating use; up to 7 hours for a final overnight pack with the air shut hard. For loading, follow the principle the manual describes: rake remaining charcoal toward the door before loading, then load three logs on the coal bed in east-west orientation with 1–2 inches of air space from the rear firebrick, and two more logs on top angled slightly. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load, close the door, and run the air open until the load is fully engaged before reducing the air gradually. Do not elevate the fire by using a grate. Always operate the stove with the ash drawer closed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Osburn 2000 has a built-in ash drawer system (included with each base configuration) — the ash plug in the firebox floor opens to drop ash into the drawer below. Per the manual, empty every 2–3 days during full-time heating. The best time to remove ash is after an overnight fire when the stove is relatively cool but there is still some chimney draft to draw ash dust into the stove rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the stove is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door, not just at the latch. The latch mechanism is also adjustable — turn the handle one counterclockwise turn (after removing the split pin with pliers) to increase pressure. Replacement materials run $20–$40; replacement is a 30-minute job. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney. Do not burn manufactured logs made of wax-impregnated sawdust or logs with chemical additives; 100% compressed-sawdust logs can be used but never more than two at a time.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, ash drawer, steel legs, pedestal, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCarbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eStandard blower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and blower components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 2.3\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame SBI medium-large stove performance platform — same firebox class, same combustion chamber, same 20\" log capacity, same 75,000 BTU\/hr maximum, same warranty schedule, same EPA 2020 certification class. The Solution 2.3 is the plainer Enerzone-tier version with seven base configurations at the Enerzone price point, blower optional and sold separately, no required door overlay step. The Osburn 2000 adds the Osburn brand finish, the required door overlay choice in Black or Brushed Nickel, and the 130 CFM blower included as standard. Choose by the brand, finish, and whether you want the blower included or as a separate purchase.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller Osburn-tier model. 1.86 ft³ firebox, 65,000 BTU\/hr max, 500–1,800 sq ft heating range, 18\" log capacity, 7-hour burn, blower optional. Choose the Osburn 1700 for heating under 1,500 sq ft and the smaller footprint; choose the Osburn 2000 for the bigger firebox, 20-inch logs, longer burn time, primary heat in larger spaces, and the included blower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Matrix\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame SBI medium-large platform as the Osburn 2000 with contemporary European styling, an optional steel or Quebec-soapstone top and side panels, and lower published emissions of 1.54 g\/hr. Includes the same 130 CFM blower. Choose the Matrix if you want the modern aesthetic and class-leading emissions; choose the Osburn 2000 if you want the traditional arched cast-iron door look at a lower price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Super 27\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the medium-large stove class. 2.0 ft³ firebox, sealed-firebox technology, premium build, higher price. The most-mentioned cross-shop on hearth-enthusiast forums for buyers comparing mid-to-large non-cat stoves. Higher price; longer real-world burn potential.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Osburn 2000 is the medium-large workhorse in the Osburn line. Built for homes that need real heat across real square footage, with 20-inch logs, an 8-hour burn cycle, and the 130 CFM blower included as standard. Configure the base and overlay once, install it right, burn good wood, and it carries you through winter.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Traditional Black","offer_id":49275663777985,"sku":"OB02015+OA10237+OA10226","price":3299.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Pedestal","offer_id":49275663810753,"sku":"OB02015+OA10237+OA10239","price":3409.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Black","offer_id":49275665711297,"sku":"OB02015+OA10237+OA10235","price":3519.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Traditional Brushed Nickel","offer_id":49275665744065,"sku":"OB02015+OA10237+OA10228","price":3734.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Brushed Nickel","offer_id":49275665776833,"sku":"OB02015+OA10237+OA10236","price":3794.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Traditional Black","offer_id":49275663843521,"sku":"OB02015+OA10238+OA10226","price":3519.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Pedestal","offer_id":49275663876289,"sku":"OB02015+OA10238+OA10239","price":3629.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Black","offer_id":49275665809601,"sku":"OB02015+OA10238+OA10235","price":3739.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Traditional Brushed Nickel","offer_id":49275665842369,"sku":"OB02015+OA10238+OA10228","price":3954.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Brushed Nickel","offer_id":49275665875137,"sku":"OB02015+OA10238+OA10236","price":4014.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-2000-wood-stove-front-ob02015_2_109090e3-6282-4a8c-97f0-7e2bad42f437.webp?v=1748289153"},{"product_id":"osburn-inspire-2000-wood-stove","title":"Osburn Inspire 2000 Wood Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 44px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(n+2) { text-align: right; min-width: 44px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA contemporary freestanding non-catalytic wood stove with a 2.4 ft³ firebox, 75,000 BTU\/hr maximum cordwood output, and 20 1\/4\" × 9 1\/2\" ceramic glass — the widest single-pane viewing area in the Osburn freestanding lineup. EPA 2020 cordwood certified at 72% HHV efficiency, well below the 2.5 g\/hr particulate emissions limit, with up to 8-hour maximum burn and 500–2,100 sq ft heating range. 20-inch east-west log capacity, 6-inch chimney, 3\/16\" steel body with 5\/16\" steel top, 84-inch ceiling clearance. Approved for both alcove and mobile-home installation (US and Canada). One buyer-configurable choice at order: base style (Minimalist Base default, Black Steel Base upgrade, or Soapstone Base premium upgrade). Blower is sold separately.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 1,000 and 1,800 sq ft who want a freestanding wood stove with a contemporary European-style design language — pure lines, balanced proportions, large horizontal glass viewing area — that fits modern interiors without the traditional cast-iron-and-pedestal aesthetic.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a serious heating appliance behind the contemporary styling. The 2.4 ft³ firebox, 75,000 BTU\/hr maximum cordwood output, and 8-hour maximum burn give this stove genuine primary-heat capability in the 1,000–1,800 sq ft range. The 72% HHV average efficiency and EPA 2020 cordwood compliance place it comfortably within current emissions standards — not a decorative stove dressed as a heater.\u003c\/p\u003e\n\u003cp\u003eOwners of small to mid-sized homes, manufactured homes, mobile homes, or alcove installations. The Inspire 2000 is approved for both alcove and mobile-home installations in the US and Canada per the manufacturer listing — uncommon dual approval that opens installation locations many other freestanding wood stoves can't serve. Heavy-gauge construction (3\/16\" body steel, 5\/16\" top steel) is stronger than typical at this output tier.\u003c\/p\u003e\n\u003cp\u003eBuyers who want at-order configurability on the base. Three base styles are real buyer choices: Minimalist Base (default — for installation on a non-combustible podium), Black Steel Base (upgrade — pedestal-style elevated base), or Soapstone Base (premium upgrade — natural soapstone with thermal-mass heat retention). The base choice substantially changes the appliance's visual character and heat-retention behavior.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the optional NightFlame ceramic glass upgrade — semi-transparent black ROBAX® glass that conceals the firebox when the fire is out and reveals the flame when burning. Available on this and a few other SBI premium models.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the optional Modern Stove Bench for the Minimalist Base configuration. The bench is designed specifically as a companion piece to the Inspire 2000 on the minimalist base, creating an integrated furniture-style installation.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers who want a traditional wood-stove aesthetic. The Inspire 2000 leans contemporary — clean steel-framed door, horizontal glass, European-style proportions. Buyers who want the traditional cast-iron pedestal look should consider the Osburn 2000 wood stove (same firebox tier, traditional styling, blower included).\u003c\/p\u003e\n\u003cp\u003eNot for buyers heating more than ~1,800 sq ft as primary winter heat in cold climates or older homes. The 2,100 sq ft figure on the manufacturer's range is aspirational; for primary heat in larger spaces, step up to the Osburn 3500 (3.3 ft³ firebox, 110,000 BTU\/hr, 2,700 sq ft range).\u003c\/p\u003e\n\u003cp\u003eNot for buyers who want a blower included. Unlike the Osburn 2000 wood stove (which ships with a 130 CFM blower included), the Inspire 2000 sells the blower kit separately. Buyers planning to use forced-air heat distribution need to add the blower as a line item, plus the optional heat sensor for auto-start operation.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 12+ hour overnight burns. Non-catalytic appliances give you 6–8 hours of useful heat from a packed firebox of dense hardwood; for longer burns, a catalytic stove is the right tool.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who don't have access to dry, properly seasoned cordwood. The 72% efficiency and EPA 2020 compliance assume cordwood at 15–25% moisture content — burning wet or marginally seasoned wood undercuts every published number on this page and tars the glass.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAppliance type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eFreestanding wood stove\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eFreestanding solid-fuel heating appliance burning seasoned cordwood. Connects to a 6-inch Class A insulated chimney. Approved for installation on a hearth pad or floor protector in residential, manufactured, mobile-home, and alcove locations.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eStainless-steel secondary-air tubes reignite smoke gases. No catalyst to replace; simpler operation than a cat appliance but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 ft³ overall \/ 1.95 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Mid-size firebox suited to homes in the 1,000–1,800 sq ft range. The 1.95 ft³ EPA loading volume is what was used during emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Based on loading density of 15–20 lb\/ft³ and reloading intervals of 60–120 minutes. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,200–44,500 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,000–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e72% HHV \/ 77% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e79% LHV optimum efficiency at low burn rate; 76% HHV optimum heat-transfer efficiency. Among the higher efficiency figures in the Osburn freestanding wood-stove lineup. HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBelow EPA 2.5 g\/hr limit\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified by an independent accredited laboratory. Tested at well below the 2.5 g\/hr particulate limit for cordwood appliances. Specific tested figure varies between published manufacturer materials — confirm the current figure with the dealer or manufacturer if it matters to your jurisdiction's requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage CO emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e69 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAverage carbon monoxide emissions per CSA B415.1-10 stack-loss method. In line with the Osburn freestanding wood-stove lineup at comparable output.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLonger logs go east-west across the 21-inch firebox width. Loading is over width (east-west), not north-south.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHeavy-gauge steel body, steel-framed glass door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e3\/16\" steel body with 5\/16\" steel top — heavier-gauge construction than typical at this output tier. Welded steel firebox lined with moulded refractory bricks, stainless-steel secondary-air tube assembly, steel-framed single ceramic glass door with cast-iron handle. Limited lifetime warranty on the combustion chamber.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBase style\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Minimalist Base (default — installation directly on a non-combustible podium), Black Steel Base (upgrade — pedestal-style elevated base), or Soapstone Base (premium upgrade — natural soapstone for thermal mass and visual warmth). The base choice substantially changes the appliance's visual character. Not field-swappable after order without purchasing the alternate base kit separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast or equivalent\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 1\/4\" × 9 1\/2\", ceramic, single door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eViewable glass surface, per Osburn's official spec. Ceramic glass with air-wash system, tested for high-temperature operation. The widest single-pane glass in the Osburn freestanding stove lineup at this tier — a defining visual signature. Optional NightFlame ceramic glass upgrade conceals the firebox when the fire is out.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSold separately\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eUnlike the Osburn 2000 wood stove (which ships with a 130 CFM blower included), the Inspire 2000 sells the blower kit separately. Optional variable-speed blower provides up to 130 CFM and mounts at the rear of the stove for heat distribution into the room. Pair with the optional heat sensor for auto-start operation based on stove temperature.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Chimney must be 6 in interior diameter. Type of chimney: CAN\/ULC S629 (Canada) or UL 103 HT 2100 °F (USA). Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum chimney height\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12 ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec, measured from the stove to the chimney cap outside the house. 15 ft or higher is ideal for optimal draft. Subject to installer verification, certification label, draft conditions, and local code.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21\" W × 16 3\/4\" D × 11 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Loading is over width (east-west) per the manufacturer's specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20\" W × 8 3\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening per manufacturer spec. Wide horizontal opening accepts long east-west loading; height is tight, so size splits accordingly.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e27 7\/8\" W × 24 1\/4\" D × 35 5\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions per manufacturer spec. Compact footprint relative to firebox volume — efficient use of vertical space. Plan ceiling clearance to allow the 84-inch top clearance.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e439 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eHeavy enough to require multi-person handling at delivery. Confirm floor support and the hearth pad load rating before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes (US and Canada)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for installation in manufactured and mobile homes in both the US and Canada per manufacturer listing. A fresh-air intake kit is mandatory for mobile-home installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for alcove installation per manufacturer listing. Uncommon among freestanding wood stoves. Verify alcove dimensions and ceiling requirements with installer and AHJ.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandards\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUL 1482 \/ UL 737, ULC S627, EPA Method 28 \/ CSA B415.1-10\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSafety standards UL 1482 and UL 737 (USA), ULC S627 (Canada). Emissions standards EPA Method 28 (USA) and CSA B415.1-10 (Canada). Tested and listed by an accredited laboratory (CAN\/USA).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Inspire 2000 is designed for installation in a permitted residential space — a living room, family room, basement, finished workshop, manufactured home, or mobile home with adequate floor support and a 6-inch Class A insulated chimney path to the exterior. Approved for both alcove and mobile-home installations in the US and Canada per the manufacturer listing — uncommon dual approval that opens installation locations many other freestanding wood stoves can't serve.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eCA SW\u003c\/span\u003e\u003cspan\u003eCA DW\u003c\/span\u003e\u003cspan\u003eUS SW\u003c\/span\u003e\u003cspan\u003eUS DW\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBack wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e14 1\/2\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e11\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCorner\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e10\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e10\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSide wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e17\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e17\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop (platform to ceiling)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eSW = single-wall stove pipe (less expensive but requires more clearance). DW = double-wall stove pipe (more expensive but allows closer installation). Choosing double-wall pipe meaningfully reduces back-wall clearance — from 14 1\/2\" to 6\" in Canada, 11\" to 6\" in the US. The certification label on the unit is the binding clearance for any installation and always overrides clearance figures published in any other media. Confirm the binding clearance figures with your installer before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection \/ hearth pad\u003c\/h3\u003e\n\u003cp\u003eA non-combustible floor protector is required under and around the appliance unless the existing floor is already non-combustible. In Canada, the floor protector must extend at least 18 inches in front of the door opening and at least 8 inches on each side of the appliance. In the US, the floor protector must extend at least 16 inches in front of the door opening and at least 8 inches on each side. The manufacturer offers pre-sized options including a 46 3\/4\" × 54\" black steel hearth pad, a 60\" corner black steel hearth pad, and 54\" × 46 3\/4\" tempered glass hearth pads in clear or tinted finishes for buyers wanting a coordinated finished look. The Minimalist Base configuration is designed for installation directly on a non-combustible podium — confirm hearth pad sizing matches the base configuration with installer.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eA 6-inch chimney flue system is required. New factory-built chimney systems must comply with UL 103 HT 2100 °F (USA) or ULC S629 (Canada) and be suitable for solid fuel. The minimum chimney height is 12 feet measured from the stove to the chimney cap outside the house; 15 feet or higher is ideal for optimal draft. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eAn 8-inch chimney is not recommended — EPA\/CSA B415.1-10 certified heaters function best on a 6-inch chimney. If your existing chimney is 8 inches, install a 6-inch stainless steel liner inside it. Masonry chimneys require a stainless steel liner sized to match the 6-inch flue outlet.\u003c\/p\u003e\n\n\u003ch3\u003eSingle-wall vs double-wall stove pipe\u003c\/h3\u003e\n\u003cp\u003eThe Inspire 2000's clearances reduce meaningfully with double-wall stove pipe vs single-wall. Single-wall pipe is approximately one-third the cost of double-wall but requires substantially more clearance (14 1\/2\" back wall in Canada, 11\" in the US). Double-wall pipe provides thermal insulation between the inner stainless steel and outer wall, allowing the stove to install closer to combustible surfaces (6\" back wall in both Canada and US). For tight installations or rooms where every inch matters, double-wall pipe is usually the right choice despite the cost premium.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eA fresh-air intake is required for mobile-home installations and strongly recommended for tight new-construction homes with mechanical ventilation, for homes with powerful range hoods or other mechanical exhaust appliances, and where local code requires it. A 5-inch insulated flex pipe and 5-inch fresh air intake register with airtight damper are sold separately for buyers configuring outside-air installations. A smoke detector and carbon monoxide detector are required in the room where the stove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. EPA-certified wood heaters are mandatory in the United States, British Columbia, Ontario, Quebec, Nova Scotia, New Brunswick, and Newfoundland — confirm local requirements before purchasing, particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInspire 2000 freestanding wood stove with 3\/16\" steel body, 5\/16\" steel top, welded steel firebox, moulded refractory brick lining, stainless-steel secondary-air tube assembly, steel-framed single ceramic glass viewing door, and black decorative side panel\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required base selection — Minimalist Base (default), Black Steel Base (upgrade), or Soapstone Base (premium upgrade)\u003c\/li\u003e\n\u003cli\u003eC-Cast or equivalent baffle\u003c\/li\u003e\n\u003cli\u003eEasy-access ash drawer\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch Class A insulated chimney system — listed factory-built chimney complying with UL 103 HT (USA) or ULC S629 (Canada); required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eStove pipe connector between the stove and chimney — single-wall or double-wall (double-wall recommended for closer-to-wall installations per the clearance table)\u003c\/li\u003e\n\u003cli\u003eHearth pad or floor protector sized to manual specifications — manufacturer options include Black Steel Hearth Pad 46 3\/4\" × 54\" (SBI AC02788), 60\" corner (SBI AC02790); Tempered Glass Hearth Pad 54\" × 46 3\/4\" (SBI AC02703); Tinted Tempered Glass Hearth Pad 54\" × 46 3\/4\" (SBI AC02758)\u003c\/li\u003e\n\u003cli\u003eOptional Blower with Variable Speed Control up to 130 CFM (SBI AC03095) — meaningfully improves heat distribution into the room; mounts at the rear of the stove. Not included with the appliance — sold as a separate kit\u003c\/li\u003e\n\u003cli\u003eOptional Quick Connect Heat Sensor (SBI AC02055) — auto-starts the blower when the stove reaches operating temperature (approximately 115 °F at the heat shield) and stops it when temperature drops\u003c\/li\u003e\n\u003cli\u003eOptional NightFlame Semi-Transparent Black Glass (SBI AC02775) — ROBAX® ceramic glass upgrade that conceals the firebox interior when the fire is out and reveals the flames when burning\u003c\/li\u003e\n\u003cli\u003eOptional Modern Stove Bench (SBI AC02354) — companion bench designed specifically for the Minimalist Base configuration; creates an integrated furniture-style installation\u003c\/li\u003e\n\u003cli\u003eOptional Moulded Refractory Panels (SBI AC01236) — replacement refractory panel set\u003c\/li\u003e\n\u003cli\u003eOptional 5\" × 4' Insulated Flex Pipe for fresh air intake (SBI AC02090) and 5\" Fresh Air Intake Register with Airtight Damper (SBI AC01349) — required for mobile-home installations, recommended for tight homes\u003c\/li\u003e\n\u003cli\u003eOptional Modular Heat Shield System 53\" × 58 1\/2\" (SBI AC02762) and Heat Shield Extension (SBI AC02713) — for installations requiring additional wall shielding\u003c\/li\u003e\n\u003cli\u003eOptional Black Heat Shield (SBI AC05555) — alternative rear heat shield configuration\u003c\/li\u003e\n\u003cli\u003eDigital moisture reader (SBI AC07835) and probe thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eGlass cleaner (SBI AC07825), dry cleaning pad (SBI AC07824), gloves (SBI AC07820 or AC07822), fire starters — consumables for normal operation and maintenance\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at loading density of 15–20 lb\/ft³ and reload intervals of 60–120 minutes. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 14,200–44,500 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\n\u003cp\u003eA realistic operating day, primary-heat use, cold climate: morning reload at sunrise produces a fast 60–90 minute warm-up and several hours of high output; mid-afternoon reload sustains heat through evening; a full pack at bedtime gives 6–7 hours of useful heat overnight, with the stove at coals by morning. In practical use with seasoned oak, maple, or hickory, expect 6–8 hours of useful heat from a packed load. With birch, pine, or softer wood, expect 4–5 hours.\u003c\/p\u003e\n\n\u003cp\u003eThe contemporary steel-framed door design with 20 1\/4\" × 9 1\/2\" ceramic glass gives the widest single-pane viewing area in the Osburn freestanding lineup at this tier. Wide horizontal glass shows more of the fire than narrow vertical glass at the same square inches — the visual character matches the contemporary architectural styling. The optional NightFlame ceramic glass changes the visual entirely when installed, concealing the firebox when the fire is out.\u003c\/p\u003e\n\n\u003cp\u003eThe 72% HHV average efficiency and EPA 2020 cordwood certification place the Inspire 2000 in the higher efficiency band of the Osburn freestanding lineup. The 79% LHV optimum at the specific test burn rate is competitive with the larger Matrix wood stove and higher than the standard Osburn 2000. HHV is the federal standard.\u003c\/p\u003e\n\n\u003cp\u003eThe 20-inch maximum log capacity is generous for a 2.4 ft³ firebox. Most firewood suppliers cut to 16 inches, which is also the manufacturer's recommended length. Loading is over width (east-west) per the manufacturer specification.\u003c\/p\u003e\n\n\u003cp\u003eHeat distribution by radiation alone — the way the appliance ships from the factory — is meaningful given the heavy-gauge steel construction (3\/16\" body, 5\/16\" top) and the soapstone base option's thermal mass. The optional 130 CFM blower substantially extends heat distribution into the room and adjacent spaces; for primary heat in larger spaces or open floorplans, plan the blower as part of the appliance specification, not an afterthought.\u003c\/p\u003e\n\n\u003cp\u003eThe base choice meaningfully affects the appliance's visual and thermal behavior. The Minimalist Base is a low-profile mounting designed for installation directly on a non-combustible podium — the stove appears to sit close to the floor, contemporary in feel. The Black Steel Base elevates the stove on a traditional pedestal, allowing better airflow underneath and a more conventional stove height. The Soapstone Base adds 90+ lb of natural soapstone — the stone absorbs heat during high burns and radiates it during low burns, smoothing temperature swings in the room.\u003c\/p\u003e\n\n\u003cp\u003eThe heavy-gauge construction (3\/16\" body, 5\/16\" top) is meaningfully stronger than typical wood stoves at this output tier. Heavier steel resists warping over years of high-temperature cycles and extends the practical service life of the appliance. The trade-off is shipping weight (439 lb) and the multi-person handling required at delivery and installation.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass on the door stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic tube appliances, not specific to Osburn, and it is the strongest signal that your wood is too wet or your burn is too cool.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eOne buyer-configurable choice at order — base style with three options.\u003c\/strong\u003e Minimalist (default), Black Steel (upgrade), or Soapstone (premium upgrade). The base choice substantially changes the appliance's visual character and is not field-swappable after order without purchasing the alternate base kit separately. Walk through the base options with the room aesthetic and installation podium in mind before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower is sold separately.\u003c\/strong\u003e Unlike the Osburn 2000 wood stove (which ships with a 130 CFM blower included), the Inspire 2000 sells the blower kit as a separate line item. For buyers planning primary-heat use or wanting forced-air distribution into adjacent rooms, the blower is essentially mandatory — plan it as part of the appliance specification, not an upgrade. Add the optional heat sensor for auto-start operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTight door opening height.\u003c\/strong\u003e 8 3\/8\" door opening height is on the lower end for a 2.4 ft³ firebox. Size firewood splits accordingly — narrow east-west loading is the practical loading approach. Buyers used to taller front-loading doors should plan the wood split size to match.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eContemporary styling polarizes.\u003c\/strong\u003e The Inspire 2000 leans hard into contemporary European design — clean lines, horizontal glass, steel-framed door. Buyers who want the traditional cast-iron pedestal wood-stove look will not be happy with this appliance. Visit a dealer with the stove on display before committing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Osburn 2000 may be the better value for traditional buyers.\u003c\/strong\u003e The Osburn 2000 wood stove has the same firebox tier, same EPA 2020 cordwood certification, includes a 130 CFM blower as standard, and carries a lower starting price than the Inspire 2000. The Inspire 2000's premium pays for contemporary styling, the larger glass viewing area, the wider base options, and the NightFlame glass option — but in terms of pure heating capability and value, the Osburn 2000 may be the better buy. Choose between them based on aesthetic preference and feature priorities, not BTU output.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat appliance gives you simpler operation and no catalyst to replace, but you pay for it with shorter burns. The 8-hour maximum claim is achievable on a packed load of dense hardwood with the air shut down hard; useful heat through that cycle is realistically 6–7 hours. For 12+ hour overnight burns with steady output, a catalytic or hybrid stove is the right tool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e439 lb shipping weight.\u003c\/strong\u003e Heavy enough to require multi-person handling at delivery; the curb-to-hearth move is not a one- or two-person job. The Soapstone Base adds approximately 90+ lb on top of that — confirm floor support and hearth pad load rating before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the stove doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A digital moisture meter is the single best accessory for this stove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat appliances. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this stove. Owners chasing always-clear glass on long, slow burns should look at catalytic technology — or to the optional NightFlame ceramic glass, which conceals the firebox when the fire is out and changes the glass appearance entirely.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSingle-wall stove pipe carries a clearance penalty.\u003c\/strong\u003e 14 1\/2\" back-wall clearance in Canada with single-wall pipe vs 6\" with double-wall is a meaningful difference. For tight installations, factor double-wall stove pipe (approximately 3× the cost of single-wall) into the total project budget.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong during paint cure-in. Ventilate the room well, avoid prolonged exposure, and expect the odor to disappear after the first several hot burns.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes top-down lighting as an effective method — largest splits on the bottom, smaller above, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A flue thermometer is strongly recommended — without one, you are guessing at draft, burn rate, and overfire risk. The manual specifies keeping flue temperature in the comfort zone of 250–475 °F at steady state, with 700 °F acceptable transiently during start-up. Do not maintain excessive temperatures over long periods.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–5 hours between reloads in active high-output use; 6–7 hours for a final overnight pack with the air shut hard. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. Place at least three pieces on the fire at a time so that the heat radiated from one piece helps ignite the pieces next to it. Loading is over width (east-west) per the manufacturer's loading specification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower management.\u003c\/strong\u003e If the optional blower is installed, it starts automatically via the optional heat sensor when the stove reaches operating temperature, typically about an hour after cold start. Adjust speed using the variable speed control. Turn the blower OFF before opening the door fully — otherwise it can blow ash out of the firebox into the room.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh drawer.\u003c\/strong\u003e Easy-access ash drawer at the base of the appliance simplifies ash removal. Empty ash into a metal container with a lid and store outside, away from combustible materials, for at least 48 hours before disposal — embers can remain hot for days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the stove is hot.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor alignment and gasket replacement.\u003c\/strong\u003e The door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Plan on gasket replacement every 3–5 seasons in regular use. Replacement gasket kits are available through the SBI parts network.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect monthly during the heating season until you know your creosote-formation rate; if buildup reaches 1\/8 inch, sweep immediately. Heavy burners or those with marginally seasoned wood may need mid-season cleaning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a digital moisture meter, split a piece in half, measure the fresh face. Manual target: 15–25% moisture, ideally below 25%. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products (other than for fire starting), asbestos materials, construction or demolition debris, salt-water driftwood, kerosene, diesel fuel, or unseasoned wood. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan colspan=\"2\"\u003eParts\u003c\/span\u003e\u003cspan colspan=\"2\"\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron components\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeat exchanger, baffle, body components, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism, ash drawer\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSteel base \/ soapstone base \/ decorative panels\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eOptional blower, heat sensor, switches, wiring (if installed)\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, refractory bricks, ceramic fiber blankets\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower kit, base components, and venting components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 2000 Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eClosest sibling in the Osburn freestanding wood-stove line — same 2.4 ft³ firebox, same 75,000 BTU\/hr maximum cordwood output, same 14,200–44,500 BTU\/hr tested band, same EPA 2020 cordwood certification, same 8-hour max burn, same 20-inch log capacity, same 6-inch chimney. Differences: traditional cast-iron door styling and pedestal (vs Inspire's contemporary steel-framed door and three base options); 130 CFM blower included as standard (vs Inspire sold-separately blower kit); slightly smaller glass viewing area; lower starting price than the Inspire 2000. Choose the Osburn 2000 for the traditional aesthetic, included blower, and lower purchase price; choose the Inspire 2000 for the contemporary European styling, larger horizontal glass viewing area, three base options at order (Minimalist \/ Black Steel \/ Soapstone), and the NightFlame glass upgrade option.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Matrix Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium contemporary sibling in the Osburn freestanding wood-stove line — same 2.4 ft³ firebox tier, same 75,000 BTU\/hr max output, lower particulate emissions than the Inspire 2000, blower included as standard, sleek contemporary styling, higher starting price than the Inspire 2000. Choose the Matrix for the lower emissions, included blower, and Osburn's most contemporary wood-stove design language; choose the Inspire 2000 for the wider horizontal glass viewing area, the soapstone base option, the Modern Stove Bench companion accessory, and lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700 Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller sibling in the Osburn freestanding wood-stove line — 1.9 ft³ firebox, 65,000 BTU\/hr maximum cordwood output, 500–1,800 sq ft heating range, traditional styling, significantly lower starting price than the Inspire 2000. Choose the Osburn 1700 for smaller heating needs, lower purchase price, and traditional aesthetic; choose the Inspire 2000 for the larger 2.4 ft³ firebox, higher BTU output, contemporary styling, base configurability, and the wider glass viewing area.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Super 27\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the EPA-certified non-catalytic wood-stove category, built by Pacific Energy in British Columbia. 2.2 ft³ firebox, 80,000 BTU\/hr max output, 79% efficiency, included Extended Burn Technology (EBT), heavy-gauge floating firebox design, both leg and pedestal configurations available, Mobile Home approved including in the US. Significantly higher purchase price than the Inspire 2000. Choose the Pacific Energy Super 27 for the Pacific Energy floating-firebox build philosophy and the established premium cross-brand reputation; choose the Inspire 2000 for the larger 2.4 ft³ firebox, contemporary European styling, three base options at order, larger horizontal glass viewing area, and lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eA contemporary freestanding wood stove with European-style design language, the widest single-pane glass in the Osburn freestanding lineup, and three base options at order. For buyers who want serious EPA 2020 heating capability behind contemporary styling — and who are willing to add the blower separately to get the heat distribution they need.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Minimalist","offer_id":49275730395329,"sku":"OB02042+OA10242+OA10243","price":4049.0,"currency_code":"USD","in_stock":true},{"title":"Black Steel","offer_id":49275730428097,"sku":"OB02042+OA10243+OA10240","price":4389.0,"currency_code":"USD","in_stock":true},{"title":"Soapstone","offer_id":49275730460865,"sku":"OB02042+OA10244+OA10241","price":4934.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-inspire-2000-wood-stove-front-ob02042.webp?v=1748290132"},{"product_id":"osburn-matrix-wood-stove","title":"Osburn Matrix Wood Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 44px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(n+2) { text-align: right; min-width: 44px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA freestanding wood stove with a 2.4 ft³ firebox, 75,000 BTU\/hr maximum cordwood output, included 130 CFM blower, and 19 5\/8\" × 11 7\/8\" ceramic glass. EPA 2020 cordwood certified at 72% HHV efficiency, well below the 2.5 g\/hr particulate emissions limit, with up to 8-hour maximum burn and 500–2,100 sq ft heating range. 20-inch east-west log capacity, 6-inch chimney, 3\/16\" steel body with 5\/16\" steel top, pedestal mount. Approved for both alcove and mobile-home installation (US and Canada). Two buyer-configurable choices at order: side panels and top panel finish — Black Steel (default) or Soapstone (upgrade) for each.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 1,000 and 1,800 sq ft who want a freestanding wood stove with European-inspired pedestal styling, soapstone accent options, and a heating capability that earns its place as primary or substantial supplemental heat in the room where it lives.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a blower included as standard. The Matrix ships with a 130 CFM blower already installed — meaningfully better heat distribution into the room than a stove without one, and one less line item on the order. Compared to the Inspire 2000 (which sells the same 130 CFM blower kit separately as an add-on), the Matrix is the more complete-out-of-the-box configuration.\u003c\/p\u003e\n\u003cp\u003eBuyers who want at-order configurability on the visible side and top panels. Two real buyer choices: Side panels (Black Steel default or Soapstone premium upgrade) and Top panel (Black Steel default or Soapstone upgrade). Soapstone is sourced from a Quebec City mine and adds visual warmth as well as thermal mass — the stone absorbs heat during high burns and radiates it during low burns, smoothing temperature swings in the room.\u003c\/p\u003e\n\u003cp\u003eOwners of small to mid-sized homes, manufactured homes, mobile homes, or alcove installations. The Matrix is approved for both alcove and mobile-home installations in the US and Canada per the manufacturer listing — uncommon dual approval that opens installation locations many other freestanding wood stoves can't serve. Heavy-gauge construction (3\/16\" body steel, 5\/16\" top steel) is stronger than typical at this output tier.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a serious heating appliance behind the contemporary styling. The 2.4 ft³ firebox, 75,000 BTU\/hr maximum cordwood output, and 8-hour maximum burn give this stove genuine primary-heat capability in the 1,000–1,800 sq ft range. The 72% HHV average efficiency and EPA 2020 cordwood compliance place it comfortably within current emissions standards — not a decorative stove dressed as a heater.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers who want a traditional wood-stove aesthetic. The Matrix leans contemporary — clean steel-framed pedestal, optional soapstone panels, European-inspired proportions. Buyers who want the traditional cast-iron pedestal look should consider the Osburn 2000 wood stove (same firebox tier, traditional styling, blower included) at lower starting price.\u003c\/p\u003e\n\u003cp\u003eNot for buyers heating more than ~1,800 sq ft as primary winter heat in cold climates or older homes. The 2,100 sq ft figure on the manufacturer's range is aspirational; for primary heat in larger spaces, step up to the Osburn 3500 (3.3 ft³ firebox, 110,000 BTU\/hr, 2,700 sq ft range).\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 12+ hour overnight burns. Non-catalytic appliances give you 6–8 hours of useful heat from a packed firebox of dense hardwood; for longer burns, a catalytic stove is the right tool.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting silent operation. Multiple owner reviews flag the blower as audible, particularly at higher speeds. Sit near a running unit at a dealer before purchase if quiet operation is a priority.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who don't have access to dry, properly seasoned cordwood. The 72% efficiency and EPA 2020 compliance assume cordwood at 15–25% moisture content — burning wet or marginally seasoned wood undercuts every published number on this page and tars the glass.\u003c\/p\u003e\n\u003cp\u003eNot for buyers in regions with frequent multi-day power outages who need radiant-only operation. The blower is integral to the Matrix's heat distribution design; without power, the stove still produces heat by radiation but the convection distribution drops substantially. One owner review noted this concern directly.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAppliance type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eFreestanding wood stove\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eFreestanding solid-fuel heating appliance burning seasoned cordwood. Connects to a 6-inch Class A insulated chimney. Approved for installation on a hearth pad or floor protector in residential, manufactured, mobile-home, and alcove locations.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eStainless-steel secondary-air tubes reignite smoke gases. No catalyst to replace; simpler operation than a cat appliance but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 ft³ overall \/ 1.95 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Mid-size firebox suited to homes in the 1,000–1,800 sq ft range. The 1.95 ft³ EPA loading volume is what was used during emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Based on loading density of 15–20 lb\/ft³ and reloading intervals of 60–120 minutes. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,200–44,500 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,000–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e72% HHV \/ 77% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e79% LHV optimum efficiency at low burn rate; 76% HHV optimum heat-transfer efficiency. Among the higher efficiency figures in the Osburn freestanding wood-stove lineup. HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBelow EPA 2.5 g\/hr limit\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified by an independent accredited laboratory. Tested at well below the 2.5 g\/hr particulate limit for cordwood appliances. Specific tested figure varies between published manufacturer materials — confirm the current figure with the dealer or manufacturer if it matters to your jurisdiction's requirements.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage CO emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e69 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAverage carbon monoxide emissions per CSA B415.1-10 stack-loss method. In line with the Osburn freestanding wood-stove lineup at comparable output.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLonger logs go east-west across the 21-inch firebox width. Loading is over width (east-west), not north-south.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eHeavy-gauge steel body, pedestal mount\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e3\/16\" steel body with 5\/16\" steel top — heavier-gauge construction than typical at this output tier. Welded steel firebox lined with refractory bricks, stainless-steel secondary-air tube assembly, cast-iron-framed single ceramic glass door. Pedestal mount with reversible door swing. Limited lifetime warranty on the combustion chamber.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eSide panels\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Black Steel (default) or Soapstone (premium upgrade — natural soapstone from a Quebec City mine for thermal mass and visual warmth). The side panel choice substantially changes the appliance's visual character and heat-retention behavior. Not field-swappable after order without purchasing the alternate kit separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTop panel\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Black Steel (default) or Soapstone (upgrade — pair with soapstone side panels for a coordinated finish, or use with steel side panels for a two-tone look). Not field-swappable after order without purchasing the alternate kit separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast or equivalent\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e19 5\/8\" × 11 7\/8\", ceramic, single door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eViewable glass surface, per Osburn's official spec. Ceramic glass with air-wash system, tested for high-temperature operation. Taller glass than the Inspire 2000 (20 1\/4\" × 9 1\/2\") — different proportions for different aesthetic preferences. Reversible door swing for installation flexibility.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e130 CFM, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eDistributes heat from the back of the stove into the room. Heat sensor cycles the blower automatically based on stove temperature — approximately 115 °F at the back heat shield triggers startup, below 100 °F triggers shutdown. Multiple owner reviews note the blower is audible at higher speeds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Chimney must be 6 in interior diameter. Type of chimney: CAN\/ULC S629 (Canada) or UL 103 HT 2100 °F (USA). Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum chimney height\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12 ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec, measured from the stove to the chimney cap outside the house. 15 ft or higher is ideal for optimal draft. Subject to installer verification, certification label, draft conditions, and local code.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21\" W × 16 1\/2\" D × 11 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Loading is over width (east-west) per the manufacturer's specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/2\" W × 8 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening per manufacturer spec. Reversible door swing for installation flexibility. Some owner reviews note the door opens 90 degrees rather than swinging fully out — plan loading clearance accordingly.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e27 1\/8\" W × 25\" D × 36 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions per manufacturer spec. Pedestal mount with compact footprint. Plan ceiling clearance to allow the 84-inch top clearance.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e506 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eHeavy enough to require multi-person handling at delivery. Soapstone panels add additional weight on top of the base appliance. Confirm floor support and the hearth pad load rating before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes (US and Canada)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for installation in manufactured and mobile homes in both the US and Canada per manufacturer listing. A fresh-air intake kit is mandatory for mobile-home installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for alcove installation per manufacturer listing. Uncommon among freestanding wood stoves. Verify alcove dimensions and ceiling requirements with installer and AHJ.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandards\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUL 1482 \/ UL 737, ULC-S627, EPA \/ CSA B415.1-10\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSafety standards UL 1482 and UL 737 (USA), ULC-S627 (Canada). Emissions standards EPA (USA) and CSA B415.1-10 (Canada). Tested and listed by an accredited laboratory (CAN\/USA).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Matrix is designed for installation in a permitted residential space — a living room, family room, basement, finished workshop, manufactured home, or mobile home with adequate floor support and a 6-inch Class A insulated chimney path to the exterior. Approved for both alcove and mobile-home installations in the US and Canada per the manufacturer listing — uncommon dual approval that opens installation locations many other freestanding wood stoves can't serve.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eCA SW\u003c\/span\u003e\u003cspan\u003eCA DW\u003c\/span\u003e\u003cspan\u003eUS SW\u003c\/span\u003e\u003cspan\u003eUS DW\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBack wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e14 1\/2\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e11\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCorner\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e10\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e10\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSide wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e17\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e17\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop (platform to ceiling)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eSW = single-wall stove pipe (less expensive but requires more clearance). DW = double-wall stove pipe (more expensive but allows closer installation). Choosing double-wall pipe meaningfully reduces back-wall clearance — from 14 1\/2\" to 6\" in Canada, 11\" to 6\" in the US. The certification label on the unit is the binding clearance for any installation and always overrides clearance figures published in any other media. Confirm the binding clearance figures with your installer before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection \/ hearth pad\u003c\/h3\u003e\n\u003cp\u003eA non-combustible floor protector is required under and around the appliance unless the existing floor is already non-combustible. In Canada, the floor protector must extend at least 18 inches in front of the door opening and at least 8 inches on each side of the appliance. In the US, the floor protector must extend at least 16 inches in front of the door opening and at least 8 inches on each side. The manufacturer offers pre-sized options including modular floor protection systems, tempered glass hearth pads in clear or tinted finishes, and corner-configured hearth pad systems for buyers wanting a coordinated finished look.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eA 6-inch chimney flue system is required. New factory-built chimney systems must comply with UL 103 HT 2100 °F (USA) or ULC S629 (Canada) and be suitable for solid fuel. The minimum chimney height is 12 feet measured from the stove to the chimney cap outside the house; 15 feet or higher is ideal for optimal draft. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eAn 8-inch chimney is not recommended — EPA\/CSA B415.1-10 certified heaters function best on a 6-inch chimney. If your existing chimney is 8 inches, install a 6-inch stainless steel liner inside it. Masonry chimneys require a stainless steel liner sized to match the 6-inch flue outlet.\u003c\/p\u003e\n\n\u003ch3\u003eSingle-wall vs double-wall stove pipe\u003c\/h3\u003e\n\u003cp\u003eThe Matrix's clearances reduce meaningfully with double-wall stove pipe vs single-wall. Single-wall pipe is approximately one-third the cost of double-wall but requires substantially more clearance (14 1\/2\" back wall in Canada, 11\" in the US). Double-wall pipe provides thermal insulation between the inner stainless steel and outer wall, allowing the stove to install closer to combustible surfaces (6\" back wall in both Canada and US). For tight installations or rooms where every inch matters, double-wall pipe is usually the right choice despite the cost premium.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eA fresh-air intake is required for mobile-home installations and strongly recommended for tight new-construction homes with mechanical ventilation, for homes with powerful range hoods or other mechanical exhaust appliances, and where local code requires it. A 5-inch insulated flex pipe and 5-inch fresh air intake register with airtight damper are sold separately for buyers configuring outside-air installations. A smoke detector and carbon monoxide detector are required in the room where the stove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. EPA-certified wood heaters are mandatory in the United States, British Columbia, Ontario, Quebec, Nova Scotia, New Brunswick, and Newfoundland — confirm local requirements before purchasing, particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatrix freestanding wood stove with 3\/16\" steel body, 5\/16\" steel top, welded steel firebox, refractory brick lining, stainless-steel secondary-air tube assembly, and cast-iron-framed single ceramic glass viewing door with reversible swing\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required side panel selection — Black Steel (default) or Soapstone (premium upgrade)\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required top panel selection — Black Steel (default) or Soapstone (upgrade)\u003c\/li\u003e\n\u003cli\u003e130 CFM blower with heat sensor for automatic cycling\u003c\/li\u003e\n\u003cli\u003eC-Cast or equivalent baffle\u003c\/li\u003e\n\u003cli\u003eAsh pan with removable cover\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch Class A insulated chimney system — listed factory-built chimney complying with UL 103 HT (USA) or ULC S629 (Canada); required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eStove pipe connector between the stove and chimney — single-wall or double-wall (double-wall recommended for closer-to-wall installations per the clearance table)\u003c\/li\u003e\n\u003cli\u003eHearth pad or floor protector sized to manual specifications — manufacturer options include Modular Floor Protection System 54\" × 46 3\/4\" (SBI AC02711), Modular Hearth Pad System 60\" corner (SBI AC02787), Tempered Glass Hearth Pad 54\" × 46 3\/4\" (SBI AC02703), Tinted Tempered Glass Hearth Pad 54\" × 46 3\/4\" (SBI AC02758)\u003c\/li\u003e\n\u003cli\u003eOptional Rigid Firescreen (SBI AC01315) — for occasional door-open viewing where local code permits; never leave the stove unattended\u003c\/li\u003e\n\u003cli\u003eOptional 5\" Fresh Air Intake Register with Airtight Damper (SBI AC01349), 5\" × 4' Insulated Flex Pipe for fresh air intake (SBI AC02090), and 5\" Air Intake Termination with Clamps (SBI AC01297) — required for mobile-home installations, recommended for tight homes\u003c\/li\u003e\n\u003cli\u003eOptional Certified Modular Heat Shield System 53\" × 58 1\/2\" (SBI AC02762) and Heat Shield Extension (SBI AC02713) — for installations requiring additional wall shielding\u003c\/li\u003e\n\u003cli\u003eDigital moisture reader and probe thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eGlass cleaner (SBI AC07825), dry cleaning pad (SBI AC07824), gloves (SBI AC07820 or AC07822), fire starters — consumables for normal operation and maintenance\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at loading density of 15–20 lb\/ft³ and reload intervals of 60–120 minutes. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 14,200–44,500 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\n\u003cp\u003eA realistic operating day, primary-heat use, cold climate: morning reload at sunrise produces a fast 60–90 minute warm-up and several hours of high output; mid-afternoon reload sustains heat through evening; a full pack at bedtime gives 6–7 hours of useful heat overnight, with the stove at coals by morning. In practical use with seasoned oak, maple, or hickory, expect 6–8 hours of useful heat from a packed load. With birch, pine, or softer wood, expect 4–5 hours.\u003c\/p\u003e\n\n\u003cp\u003eThe 72% HHV average efficiency and EPA 2020 cordwood certification place the Matrix in the higher efficiency band of the Osburn freestanding lineup. The 79% LHV optimum at the specific test burn rate is competitive with the Inspire 2000 and higher than the standard Osburn 2000. HHV is the federal standard.\u003c\/p\u003e\n\n\u003cp\u003eThe included 130 CFM blower with heat sensor is a meaningful differentiator from the Inspire 2000, which sells the same blower kit separately. The heat sensor cycles the blower automatically — starts at approximately 115 °F at the back heat shield, stops below 100 °F — so the buyer doesn't have to manage it manually. Air is distributed from behind the firebox out through the rear shield and into the room. The blower extends heat distribution into the room and adjacent spaces.\u003c\/p\u003e\n\n\u003cp\u003eThe 20-inch maximum log capacity is generous for a 2.4 ft³ firebox. Most firewood suppliers cut to 16 inches, which is also the manufacturer's recommended length. Loading is over width (east-west) per the manufacturer specification.\u003c\/p\u003e\n\n\u003cp\u003eThe soapstone side panel option meaningfully affects the appliance's thermal behavior. Steel panels conduct heat quickly — the stove warms the room fast and cools fast when the fire dies down. Soapstone panels absorb heat during high burns and radiate it during low burns, smoothing temperature swings in the room. The trade-off is purchase price and shipping weight; soapstone adds substantially to both.\u003c\/p\u003e\n\n\u003cp\u003eThe heavy-gauge construction (3\/16\" body, 5\/16\" top) is meaningfully stronger than typical wood stoves at this output tier. Heavier steel resists warping over years of high-temperature cycles and extends the practical service life of the appliance. The trade-off is shipping weight (506 lb base, more with soapstone panels) and the multi-person handling required at delivery and installation.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass on the single door stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic tube appliances, not specific to Osburn, and it is the strongest signal that your wood is too wet or your burn is too cool.\u003c\/p\u003e\n\n\u003cp\u003eMultiple owner reviews flag the blower fan as noisy, especially at higher settings. At low settings the appliance is quieter, but the blower is part of the operating experience either way. One owner specifically noted concern about heat output without the blower running during a power outage — this is a real consideration if you're in an outage-prone area without backup power.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTwo buyer-configurable choices at order — side panels and top panel.\u003c\/strong\u003e Side panels (Black Steel default or Soapstone premium upgrade) and top panel (Black Steel default or Soapstone upgrade). The panel choice substantially changes the appliance's visual character and thermal behavior, and is not field-swappable after order without purchasing the alternate kit separately. Walk through the panel combinations with the room aesthetic in mind before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower is essential to the design.\u003c\/strong\u003e Unlike some freestanding wood stoves where the blower is an optional add-on, the Matrix is designed around the included 130 CFM blower with heat sensor. Without power to run the blower, the stove still radiates heat but the convection distribution drops substantially. Owners in outage-prone regions should plan for a battery backup, UPS, or generator if the stove is the primary heat source.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTight door opening height.\u003c\/strong\u003e 8 3\/4\" door opening height is on the lower end for a 2.4 ft³ firebox. Size firewood splits accordingly — narrow east-west loading is the practical loading approach. Multiple owner reviews note the door opens 90 degrees rather than swinging fully out, which can make loading larger logs into the back of the firebox feel cramped.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eContemporary styling polarizes.\u003c\/strong\u003e The Matrix leans contemporary — pedestal mount, optional soapstone panels, European-inspired proportions. Buyers who want the traditional cast-iron pedestal wood-stove look will not be happy with this appliance. Visit a dealer with the stove on display before committing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSoapstone panel installation can be finicky.\u003c\/strong\u003e One owner reported the soapstone side panels could not be installed due to interference with the door latch bolts; the steel side panels (which are thinner) might fit better in some installations. If you order soapstone panels, confirm installation fit with your dealer or installer before final purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Osburn 2000 may be the better value for traditional buyers.\u003c\/strong\u003e The Osburn 2000 wood stove has the same firebox tier, same EPA 2020 cordwood certification, includes a 130 CFM blower as standard, and carries a lower starting price than the Matrix. The Matrix's premium pays for contemporary styling, soapstone panel options, and the heavier-gauge top steel — but in terms of pure heating capability and value, the Osburn 2000 may be the better buy. Choose between them based on aesthetic preference and feature priorities, not BTU output.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat appliance gives you simpler operation and no catalyst to replace, but you pay for it with shorter burns. The 8-hour maximum claim is achievable on a packed load of dense hardwood with the air shut down hard; useful heat through that cycle is realistically 6–7 hours. For 12+ hour overnight burns with steady output, a catalytic or hybrid stove is the right tool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e506 lb base shipping weight.\u003c\/strong\u003e Heavy enough to require multi-person handling at delivery; the curb-to-hearth move is not a one- or two-person job. Soapstone panels add additional weight — confirm floor support and hearth pad load rating before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower noise at higher speeds.\u003c\/strong\u003e Multiple owner reviews flag the blower as noisy at higher settings. The blower is essential for distributing heat from the back of the stove into the room, but at higher CFM settings the mechanical sound is audible. Find the right balance between heat distribution and acoustic comfort for your space.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor handle reports.\u003c\/strong\u003e A small number of owner reviews note the door handle gets loose over time. Plan for periodic tightening as part of normal maintenance, or check the handle assembly at the first sign of looseness.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the stove doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A digital moisture meter is the single best accessory for this stove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat appliances. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this stove. Owners chasing always-clear glass on long, slow burns should look at catalytic technology.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSingle-wall stove pipe carries a clearance penalty.\u003c\/strong\u003e 14 1\/2\" back-wall clearance in Canada with single-wall pipe vs 6\" with double-wall is a meaningful difference. For tight installations, factor double-wall stove pipe (approximately 3× the cost of single-wall) into the total project budget.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong during paint cure-in. Ventilate the room well, avoid prolonged exposure, and expect the odor to disappear after the first several hot burns.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes top-down lighting as an effective method — largest splits on the bottom, smaller above, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A flue thermometer is strongly recommended — without one, you are guessing at draft, burn rate, and overfire risk. The manual specifies keeping flue temperature in the comfort zone of 250–475 °F at steady state, with 700 °F acceptable transiently during start-up. Do not maintain excessive temperatures over long periods.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–5 hours between reloads in active high-output use; 6–7 hours for a final overnight pack with the air shut hard. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. Place at least three pieces on the fire at a time so that the heat radiated from one piece helps ignite the pieces next to it. Loading is over width (east-west) per the manufacturer's loading specification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower management.\u003c\/strong\u003e The blower starts automatically via the heat sensor when the stove reaches operating temperature, typically about an hour after cold start. The heat sensor handles on\/off; speed control is via the rheostat. Turn the blower OFF before opening the door fully — otherwise it can blow ash out of the firebox into the room.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh pan.\u003c\/strong\u003e Ash drawer with removable cover at the base of the appliance simplifies ash removal. One owner review noted the plug-style cover needs to be removed before raking ash to the pan, which can be inconvenient. Empty ash into a metal container with a lid and store outside, away from combustible materials, for at least 48 hours before disposal — embers can remain hot for days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the stove is hot.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor alignment and gasket replacement.\u003c\/strong\u003e The door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Plan on gasket replacement every 3–5 seasons in regular use. Replacement gasket kits are available through the SBI parts network.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor handle maintenance.\u003c\/strong\u003e A small number of owner reviews report the door handle gets loose over time. Check the handle assembly periodically and tighten as needed. Replacement handle hardware is available through the SBI parts network.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect monthly during the heating season until you know your creosote-formation rate; if buildup reaches 1\/8 inch, sweep immediately. Heavy burners or those with marginally seasoned wood may need mid-season cleaning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a digital moisture meter, split a piece in half, measure the fresh face. Manual target: 15–25% moisture, ideally below 25%. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products (other than for fire starting), asbestos materials, construction or demolition debris, salt-water driftwood, kerosene, diesel fuel, or unseasoned wood. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan colspan=\"2\"\u003eParts\u003c\/span\u003e\u003cspan colspan=\"2\"\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron components\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeat exchanger, baffle, body components, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism, ash pan\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSteel panels \/ soapstone panels \/ pedestal\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensor, switches, rheostat, wiring\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, refractory bricks, ceramic fiber blankets\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\" style=\"grid-column: span 2;\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, heat sensor, panels, and venting components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Inspire 2000\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eClosest contemporary sibling in the Osburn freestanding wood-stove line — same 2.4 ft³ firebox, same 75,000 BTU\/hr maximum cordwood output, same 14,200–44,500 BTU\/hr tested band, same EPA 2020 cordwood certification, same 8-hour max burn, same 20-inch log capacity, same 6-inch chimney, same heavy-gauge construction (3\/16\" body, 5\/16\" top). Differences: Inspire 2000 has three base options (Minimalist \/ Black Steel \/ Soapstone) vs Matrix's two panel choices (side and top); Inspire 2000 sells the blower kit separately (Matrix includes 130 CFM blower as standard); Inspire 2000 has wider but shorter glass (20 1\/4\" × 9 1\/2\") vs Matrix's taller but narrower glass (19 5\/8\" × 11 7\/8\"); Inspire 2000 has the optional NightFlame glass upgrade option, Matrix doesn't; Inspire 2000 lower starting price than the Matrix. Choose the Inspire 2000 for three base options at order, NightFlame glass option, and lower starting price; choose the Matrix for the included blower, soapstone side and top panel options, and the pedestal-with-panels styling.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 2000 Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eTraditional sibling in the Osburn freestanding wood-stove line — same 2.4 ft³ firebox tier, same 75,000 BTU\/hr max output, same EPA 2020 cordwood certification, same 130 CFM blower included as standard. Traditional cast-iron door styling and pedestal aesthetic vs the Matrix's contemporary pedestal-with-panels design language. No soapstone panel option. Lower starting price than the Matrix. Choose the Osburn 2000 for the traditional aesthetic and lower purchase price; choose the Matrix for the contemporary styling, soapstone panel options, and the heavier-gauge top steel construction.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700 Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller sibling in the Osburn freestanding wood-stove line — 1.9 ft³ firebox, 65,000 BTU\/hr maximum cordwood output, 500–1,800 sq ft heating range, traditional styling, significantly lower starting price than the Matrix. Choose the Osburn 1700 for smaller heating needs, lower purchase price, and traditional aesthetic; choose the Matrix for the larger 2.4 ft³ firebox, higher BTU output, contemporary styling, soapstone panel options, and the heavier-gauge top steel construction.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Super 27\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the EPA-certified non-catalytic wood-stove category, built by Pacific Energy in British Columbia. 2.2 ft³ firebox, 80,000 BTU\/hr max output, 79% efficiency, included Extended Burn Technology (EBT), heavy-gauge floating firebox design, both leg and pedestal configurations available, Mobile Home approved including in the US. Significantly higher purchase price than the Matrix. Choose the Pacific Energy Super 27 for the Pacific Energy floating-firebox build philosophy and the established premium cross-brand reputation; choose the Matrix for the larger 2.4 ft³ firebox, contemporary pedestal styling, soapstone panel options at order, and lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eA contemporary freestanding wood stove with European-inspired pedestal styling, included 130 CFM blower, and soapstone panel options sourced from a Quebec City mine. For buyers who want serious EPA 2020 heating capability behind contemporary styling — with the blower and the panel choices already part of the package.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Black","offer_id":49275768078529,"sku":"OB02032+OA10700+OA10704","price":4499.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Soapstone","offer_id":49275768111297,"sku":"OB02032+OA10700+OA10703","price":4779.0,"currency_code":"USD","in_stock":true},{"title":"Soapstone \/ Black","offer_id":49275768144065,"sku":"OB02032+OA10701+OA10704","price":5099.0,"currency_code":"USD","in_stock":true},{"title":"Soapstone \/ Soapstone","offer_id":49275768176833,"sku":"OB02032+OA10701+OA10703","price":5379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-matrix-wood-stove-front-ob02032_7af958ef-88ec-447f-9010-8ffe3d94c0e0.webp?v=1748290327"},{"product_id":"osburn-gusto-cook-stove","title":"Osburn Gusto Cook Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 2px solid #231F20; padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-row:first-of-type { border-top: 2px solid #231F20; }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .callout { background: #D1B382; color: #231F20; padding: 16px 18px; margin: 20px 0; font-size: 13px; line-height: 1.55; }\n  .km-desc .callout-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; margin-bottom: 8px; display: block; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.26 ft³ non-catalytic wood-burning cookstove with an integrated stainless-steel oven, glass on both the firebox and the oven door, and a cast-iron cooking surface. EPA 2020 cordwood certified at 76% HHV efficiency, mobile-home approved with the appropriate kit, with a 20-inch maximum east-west log capacity.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of cabins, cottages, off-grid homes, and rural kitchens who will actually cook on a wood appliance during heating season — not just in a power outage — and who want a modern cookstove with EPA 2020 cordwood compliance, glass on both doors, mobile-home approval, and the parts and dealer support of Stove Builder International's North American network.\u003c\/p\u003e\n\u003cp\u003eSuited to homesteaders, cabin owners, and lifestyle bakers who want one appliance to heat a kitchen, dining room, mudroom, or great room of roughly 1,000–1,800 sq ft and bake bread, simmer soup, and roast a chicken, with seasoned hardwood at 15–20% moisture content.\u003c\/p\u003e\n\u003cp\u003eMobile-home and dual-purpose-room friendly with the optional fresh-air intake kit, double-wall connector pipe, and structural attachment per the manual. The included glass-fronted oven door, integrated 150–750 °F oven thermometer, choice of black or brushed-nickel center molding, and SBI lifetime warranty give it a service profile most cookstoves in the category cannot match.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers who want a primary heater that occasionally cooks. A cookstove of comparable BTU output costs roughly $1,500–$2,500 more than a heating stove of the same firebox size, requires a larger hearth pad, locks the install to the kitchen zone, and adds a real cooking learning curve. Buyers who would only cook on the appliance a few times a year are almost always better served by a heating stove with a flat cast-iron top.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who need an integrated hot-water reservoir or coil. The Gusto has neither. Off-grid buyers whose cookstove is also their primary domestic hot-water source should look at the Heco 520, Pioneer Princess, or Kitchen Queen 480.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting set-and-forget operation. A wood cookstove is, in the manual's own words, \"an art that requires several attempts.\" Plan for a full heating season of regular use before bread comes out the way it should. The oven dial is approximate; an internal probe thermometer is the right tool for serious baking.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who want enameled-tile Italian aesthetics or a true British range-cooker. The Gusto is modern North American, painted cast iron and steel. Buyers who want La Nordica Rosa color tiles or the Esse Ironheart's six-pan hotplate are buying a different kind of object at a different price point.\u003c\/p\u003e\n\u003cp\u003eNot for whole-house primary heat in cold climates above 2,100 sq ft. The Gusto is sized for one zone or one open-plan floor; in colder regions and larger homes it is supplemental.\u003c\/p\u003e\n\u003cp\u003eNot for buyers in HOA or air-quality-restricted jurisdictions without first confirming local code permits a new wood-burning install. Not approved for installation in a sleeping room or in an alcove.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever controlling primary and secondary air simultaneously; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.26 ft³ overall \/ 1.94 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eMid-size firebox sized to drive both the oven and the room. Larger than most heating stoves in the same heating-area class, because heat has to wrap around the oven mass before reaching the room.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,300–47,300 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,000–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e76% HHV \/ 81% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e83% optimum efficiency at low burn rate (LHV). Excellent for the cookstove category — most legacy cookstoves run 50–65% real efficiency. HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.0 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified, not just EPA-exempt. Most cookstoves are exempt from EPA NSPS by category and never go through cordwood testing; SBI tested and certified the Gusto to the same standard as a modern heating stove.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful baking and cooking output is realistically a 60–90 minute hot-and-steady window per load, with one small reload at the 30-minute mark for longer bakes.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length. EPA testing was at 17 in.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eUseful margin over standard supplier cuts. Cookstove operators often keep a separate pile of small straight splits (3–4 in) for cooking-mode use.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOven (interior)\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18\" W × 15 5\/16\" D × 7 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eStainless steel, with glass-fronted oven door, integrated 150–750 °F dial thermometer, and a removable cooking grill. Approximately 50 °F variation between hottest and coldest points; rear right tends to run hottest, front left coolest.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCooktop\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCast iron, painted\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eThe cooktop paint is not food-grade. Use cookware (cast iron or stainless preferred); do not cook food directly on the painted surface. Temperature varies across the surface — hottest over the firebox, coolest at the far edge.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCenter molding\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBlack or brushed nickel\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eDecorative center band across the front of the cookstove. Black is the standard finish; brushed nickel is a configurable upgrade at order. The brushed-nickel option is unique to the Osburn Gusto in the SBI cookstove family.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox glass surface\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 5\/8\" × 8 1\/4\"\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCeramic glass with air-wash and gasket. Large viewing area for a cookstove in this class.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOven glass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 9\/16\" × 5 7\/8\"\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCeramic glass, 5\/32\" (4 mm) thick. No gasket — the oven door is intentionally not airtight to allow air circulation. Lets you watch loaves rise without dropping oven temperature by opening the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e130 CFM, optional\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSold separately. Variable-speed crossflow blower (HI \/ LO \/ OFF) with thermodisc heat sensor for automatic on\/off based on cookstove temperature. Not included in the base price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop vent. Required draft 0.05\" H₂O (12 Pa).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e575 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling. The cookstove must be leveled with its elevator bolts after placement — oven heat distribution and even baking depend on it.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRequires the 5-inch fresh-air intake kit (sold separately) and insulated intake pipe, double-wall mobile-home venting per the manual, and attachment to the home structure. Not for installation in a sleeping room. Rare in the cookstove category.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove install approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eDesigned as a freestanding kitchen, dining-room, or great-room appliance.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Gusto is designed for indoor installation in a permitted residential space — a kitchen, dining room, mudroom, sunroom, or great room with adjacent kitchen function. It is approved for mobile-home installation only when the manual's mobile-home requirements are met, including outdoor combustion air, insulated intake pipe, double-wall venting, attachment to the structure, and no sleeping-room installation. It is not approved for alcove installation, factory-built (prefab) fireplace installation, or outdoor or unconditioned-space installation.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles (USA)\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eSingle\u003c\/span\u003e\u003cspan\u003eDouble\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBack wall (A)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e15\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSide wall (B)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e15\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e15\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCorner (C)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 1\/2\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform to ceiling (L)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e72\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e72\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:14px;\"\u003eThe certification label on the back of the cookstove is the binding clearance for any installation. Reduced clearances are available with approved heat shields per the manual. Most installers default to double-wall connector pipe to gain the closer back-wall clearance. For mobile-home installations, use the manual's mobile-home clearance table: double-wall pipe is required, and platform-to-ceiling clearance is 84\", not 72\".\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eA continuous non-combustible ember-protection surface is required on combustible flooring. Steel of at least 0.015\" thickness, cement board, brick, sealed-grout ceramic tiles over a continuous non-combustible sheet, or another approved listed material may be used. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation. The pad must follow the manual's floor-protection diagram: in the USA, 16 inches in front of the door opening and 8 inches of side ember protection; in Canada, 18 inches in front and 8 inches on the other sides, subject to the manual notes and local code. Most installers extend the pad farther forward (24–36 inches) for cooking ergonomics, since the working zone in front of the oven is part of the cooking workspace. A standard non-combustible ember-protection pad is sufficient — no insulating (R-rated) hearth pad is required.\u003c\/p\u003e\n\n\u003ch3\u003eLeveling\u003c\/h3\u003e\n\u003cp\u003eUnlike a heating stove, a cookstove must be precisely level for the oven to bake evenly. The Gusto includes elevator bolts at the base; remove the ash drawer and base front to access them, then adjust with a #10 wrench until the cooktop reads level on a bubble level in both directions before final connection. This is not optional — oven hot-spot behavior depends on it.\u003c\/p\u003e\n\n\u003ch3\u003eChimney\u003c\/h3\u003e\n\u003cp\u003eThe Gusto takes a 6-inch flue and requires 0.05\" H₂O (12 Pa) of draft. For new installations, a UL 103 HT (USA) or ULC S629 (Canada) Class A insulated chimney is required. Per the manual: minimum 12 feet from the cookstove top to the exterior chimney termination. The chimney must extend at least 3 feet above the highest point of contact with the roof, and at least 2 feet above any roof line or obstacle within 10 feet horizontally. The cookstove may also be connected to a code-compliant masonry chimney with either a clay liner or a suitably listed stainless-steel liner; if the masonry liner is square or rectangular and larger in cross-section than a round 6-inch flue, the manual says it should be relined with a listed 6-inch stainless liner.\u003c\/p\u003e\n\n\u003ch3\u003eConnector pipe\u003c\/h3\u003e\n\u003cp\u003eSingle-wall or double-wall is permitted in conventional homes; double-wall is required for mobile-home installations. Maximum two 90-degree elbows; double-wall is preferred for closer wall clearances and more stable draft. The Gusto includes a universal connector spigot; double-wall installs require the supplied adapter on the spigot, fixed with three screws.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air and range hood interaction\u003c\/h3\u003e\n\u003cp\u003eThe manual requires the room to have an outside or fresh-air inlet at least 5 inches in diameter for proper draft. The fresh-air intake kit (sold separately) is mandatory for mobile-home installation, and is the cleanest solution for tight new-construction kitchens or kitchens with a powerful range hood — range-hood depressurization is a real risk in cookstove installs and can pull smoke out of the firebox or back-draft the chimney. Install it if the kitchen has a high-CFM hood, an HRV, a tight building envelope, or any combination of those. A smoke detector and carbon monoxide detector are required in the room where the cookstove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the cookstove is approved for; the AHJ approves what is permitted at your address. The Gusto's EPA 2020 cordwood certification is unusual in the cookstove category and matters in jurisdictions where local rules go beyond the federal cookstove exemption. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the cookstove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGusto cookstove with cast-iron painted cooktop, glass-fronted firebox door, glass-fronted oven door, and integrated 150–750 °F oven thermometer\u003c\/li\u003e\n\u003cli\u003eStainless-steel oven (18\" W × 15 5\/16\" D × 7 7\/8\" H) with removable cooking grill\u003c\/li\u003e\n\u003cli\u003eDecorative center molding in black (standard) or brushed nickel (configurable upgrade at order)\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eRefractory firebrick lining\u003c\/li\u003e\n\u003cli\u003ePull-out ash drawer\u003c\/li\u003e\n\u003cli\u003eUniversal chimney connector spigot, with adapter for double-wall pipe\u003c\/li\u003e\n\u003cli\u003eRemovable wood-handle air control lever and wooden door handles\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClass A insulated chimney or stainless-steel masonry liner, sized for 6-inch flue\u003c\/li\u003e\n\u003cli\u003eConnector pipe (indoor stove pipe between the cookstove and the Class A chimney) — double-wall preferred, required for mobile-home installs\u003c\/li\u003e\n\u003cli\u003eHearth pad sized to manual specifications, with continuous non-combustible sheet beneath any tile, extended forward for cooking ergonomics\u003c\/li\u003e\n\u003cli\u003eOptional 130 CFM blower kit with thermodisc — not included in the base price; recommended for open-plan rooms where heat distribution matters\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit — required for mobile-home installs, strongly recommended for tight kitchens with a powerful range hood\u003c\/li\u003e\n\u003cli\u003eStove-top or flue thermometer for managing the firebox burn rate\u003c\/li\u003e\n\u003cli\u003eInternal oven probe thermometer for serious baking — the oven dial is approximate and reads ±50–100 °F off across the cookstove category generally\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr figure on the spec sheet is a maximum-output rating based on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal cooking-mode operation. The figure that matters for daily life is the sustained output across a burn cycle, which depends heavily on wood density, moisture, and air setting. A working baking burn delivers roughly 14,000–47,000 BTU\/hr into the kitchen.\u003c\/p\u003e\n\n\u003cp\u003eA realistic operating day with active cooking, cold-climate use: morning fire from a cold start takes about 45 minutes to bring the oven to 350 °F — the iron mass has to soak through, and the dial reading ahead of that is misleading. Once at temperature, a 3\/4-full firebox of small dry hardwood splits with the air control closed to about 1\/3 open will hold a 350 °F oven for 60–90 minutes, with one small reload at the 30-minute mark for longer bakes. For artisan sourdough or slow roasts, plan to reload one small split every 20–25 minutes. With seasoned oak, maple, beech, or hickory, expect steady cooking output for 4–6 hours of active session use.\u003c\/p\u003e\n\n\u003cp\u003eThe cooktop temperature gradient is the heart of cookstove cooking. Hottest directly above the firebox (650–700 °F class on similar cookstoves), cooler toward the far end (~350 °F class), warmest center over the oven section. A pan slid left toward the firebox sears or boils; slid right it simmers; parked over the oven section it holds warm. The Gusto's working cooktop zone is roughly 18–22 inches across with a meaningful temperature gradient from end to end. Cookstove operators learn to cook with three pans simultaneously across the gradient.\u003c\/p\u003e\n\n\u003cp\u003eThe oven runs about 50 °F warmer at the rear right than at the front left — this is normal for any wood cookstove and is acknowledged in the manual. Owners adapt by rotating loaves every 10 minutes during the bake and using a pizza stone or cast-iron sheet on the lower rack to even out bottom heat. Oven dial accuracy across the cookstove category is approximate at best; the dial is a trend indicator, not a precision instrument. An internal probe thermometer is the right tool for first-year baking.\u003c\/p\u003e\n\n\u003cp\u003eThe optional 130 CFM blower meaningfully improves heat distribution from the cookstove into adjacent rooms. There are two controls: a manual rheostat marked HI \/ LO \/ OFF that you set, and an automatic heat sensor (thermodisc) that decides when the blower actually runs. Set the rheostat to LO or HI, and the sensor handles the rest — the cookstove takes about an hour to reach blower-activation temperature from a cold start, then the sensor starts the blower automatically and shuts it off when the cookstove cools at the end of a burn. At lower settings the blower is unobtrusive; at higher settings it is audible. Unlike SBI's Osburn heating stoves where the blower is included, on the Gusto it is an option that has to be specified at order.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass on the firebox door stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood — or during slow cooking-mode operation — the bottom 2–3 inches of the firebox glass will tar. This is universal to non-catalytic tube cookstoves, not specific to Osburn, and is the strongest signal that your wood is too wet or your burn is too cool. The oven glass stays cleaner because it is not in the soot path.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eA cookstove costs more than a heater of similar BTU output.\u003c\/strong\u003e A comparable-firebox Osburn heating stove (Osburn 2000, Osburn Matrix 2700) at the same heating range costs roughly $1,500–$2,500 less than the Gusto and gives you a flat cast-iron top that handles a kettle and the occasional pot just fine. The cookstove premium pays for the integrated oven, the glass oven door, the cooktop area, the cookstove styling, and the engineering that wraps flue gases around the oven before they exit. If you would only cook on the appliance two or three times a year, an Osburn heating stove with a flat top is the right tool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstall location is locked to the kitchen zone.\u003c\/strong\u003e A heating stove can go in a basement, a back room, a corner of a great room. A cookstove only earns its premium where the cooking actually happens. That means kitchen, dining room, mudroom, or great room with adjacent kitchen function — never a basement, never a bedroom, and the install footprint has to share a room with the range hood, refrigerator, and cabinetry. The Gusto needs hearth space extended forward for cooking ergonomics, not just code-minimum ember protection.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOne-season learning curve.\u003c\/strong\u003e The manual's own framing is honest: cooking with a wood cookstove is \"an art that requires several attempts.\" Plan for ruined first loaves, overcooked roasts, and a discovery period figuring out which split sizes give you a steady oven, what your stove's hot zones are, and how to time reloads. Keep a logbook of stove temp, oven temp, wood type, and outcome for the first season.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCooktop is painted, not food-grade.\u003c\/strong\u003e The cast-iron cooktop is finished in high-temperature stove paint, which is not safe for direct food contact. Use cast-iron or stainless cookware with smooth bottoms; lift rather than slide pots when possible. Owners who want to cook directly on a flat surface can add steatite (soapstone) cooking plates from the SBI parts catalog.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood loading is more particular than for a heating stove.\u003c\/strong\u003e Cookstove ovens want a steady moderate fire of small dry splits, not a packed firebox roaring out the secondaries. Most owners maintain two wood piles — a \"cookstove pile\" of small straight 3–4 inch hardwood splits, and a regular pile for everything else. Wet wood that a heating stove will tolerate at 22–25% moisture will ruin a baking session entirely.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSummer use is impractical.\u003c\/strong\u003e A working Gusto burn delivers 14,000–47,000 BTU\/hr into the kitchen. In October that is welcome. In July it is a sauna. Almost no one runs a cookstove year-round; plan for a summer cooking alternative (propane range, induction cooktop, outdoor grill, outdoor wood-fired oven) and a way to access cookware and pantry that doesn't require lighting the cookstove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNo integrated water heating.\u003c\/strong\u003e The Gusto has no factory hot-water reservoir or coil option. Off-grid buyers who want their wood appliance to also be the domestic hot-water source should look at the Heco 520, Pioneer Princess, or Kitchen Queen 480 — cookstoves designed around an integrated water tank.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor warpage and gasket maintenance.\u003c\/strong\u003e Cookstove doors are larger and span a wider thermal gradient than heating-stove doors, which makes them more prone to warping over time. The Gusto includes 3\/32\" Allen-key adjustment for door alignment and a paper-strip seal test — expect to make small adjustments after the first heating season as gaskets compress, and plan for gasket replacement every 3–5 seasons of regular use.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell is strong but not toxic. Open windows, run the cookstove hot with the oven door open, and expect the smell to disappear permanently after the cure-in. Do not put food in the oven during cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual recommends a structured top-down method specifically tuned to the Gusto firebox: split the start-up fuel into 8 pieces criss-crossed in three rows on the brick (smallest, biggest, medium), then 16–20 pieces of small kindling criss-crossed on top in four rows, then newspaper sheets over the kindling. Light the paper, leave the door open at 90° for 1 minute 30 seconds, then close. This produces a fast, clean ignition with minimal smoke.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e The single lever under the firebox door controls primary and secondary air simultaneously. Full open at light-off, gradually closed only after the load is fully engaged and stable secondary flames are established. The manual recommends reducing the air between 15% and 40% of full open during steady-state cooking — you rarely fully close the air on a cookstove because the oven needs sustained combustion to hold temperature. Do not alter the air-control limit screws to chase higher firing rates — against federal regulations and voids warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCooking technique.\u003c\/strong\u003e Build a hot fire on a 3\/4-full firebox, wait until secondaries are running and the oven dial reaches ~400 °F, then close the air control to about 1\/3 open. The oven coasts to ~350 °F and holds for 60–90 minutes. Reload one small split at the 30-minute mark for longer bakes. Cooktop temperature is regulated by pan position, not by the air control: pan over the firebox sears, pan over the oven section simmers, pan at the far edge holds warm. Common bread-baking adjustment: drop recipes that call for 425 °F to about 325 °F — the Gusto's penetrating radiant heat from steel and cast-iron walls bakes faster and crustier than a gas or electric oven.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 4–6 hours between reloads in active heating use; 6–8 hours for a final overnight pack with the air shut hard. For active baking sessions, plan for one small reload every 20–30 minutes to hold oven temperature. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. Turn the blower OFF before opening the firebox door fully — per the manual, otherwise the blower will blow ash out of the combustion chamber.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The pull-out ash drawer makes daily-to-weekly removal cleaner than shoveling. The manual recommends emptying every 2–3 days during full-time heating. Always operate the cookstove with the ash drawer in place. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn cooking weather; weekly during high-burn. Do not use abrasive products. Do not clean the glass when the cookstove is hot. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Oven glass stays cleaner than firebox glass and usually only needs an occasional wipe.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCooktop and oven cleaning.\u003c\/strong\u003e Wipe the painted cast-iron cooktop with a soft damp cloth when cool. If the paint scratches or pan spatter takes the finish off in spots, sand lightly and touch up with the metallic black stove paint from the SBI parts catalog. Clean the stainless-steel oven interior with a soft cloth and mild soap; do not use abrasives. Stainless oven discoloration to a golden or bronze tint is normal heat coloration and not a defect.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor alignment and gasket replacement.\u003c\/strong\u003e The door seal can be verified with a paper-strip test: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. The Gusto includes an eccentric-hinge adjustment system — remove decorative panels, loosen the 3\/32\" Allen pressure screws, turn the adjustable hinge rods to align the door, retighten. Gasket replacement is a 30–45 minute job; materials run $30–$50.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year, with monthly checks during the heating season until you know your creosote-formation rate. If buildup reaches 1\/8 inch, sweep immediately. Heavy cookstove use with marginally seasoned wood will produce more creosote than a heating stove burning hot — cookstove gas paths route around the oven mass before exiting and run cooler than a straight-up heating-stove flue. Inspection of the gas path can be facilitated by removing the baffle and the chimney for full access.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — buy a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page — and will make baking essentially impossible.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCooking-specific wood selection.\u003c\/strong\u003e Smaller splits (3–4 inches), well-seasoned hardwood (oak, maple, beech, hickory, ash). Avoid soft woods (pine, fir, poplar) for cooking — they burn too fast and spike oven temperature. Avoid resinous woods entirely — they can foul the oven gas path. Maintain a separate small-split cookstove pile distinct from your bulk overnight-burn pile.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no charcoal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products, cardboard, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox and oven path, voids the warranty, releases toxic compounds into your home and the chimney, and contaminates anything you cook in the oven afterwards.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, ash drawer, steel legs, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCarbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this cookstove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, and accessory kits are openly available at fair prices through the SBI dealer and parts vendor network.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Pyra\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eMechanically identical SBI chassis — same firebox, same oven, same blower option, same baffle, same emissions and efficiency, same warranty. Different cosmetic detailing in Enerzone's design language with fluted cast-iron columns and a single sculpted black wooden handle. Choose this if you prefer the Enerzone aesthetic; performance is the same.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eJ.A. Roby Cuisinière 3.0\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eQuebec-built competitor with a larger firebox, higher rated BTU, integrated food warmer above the oven, and mobile-home approval. EPA-exempt as a cookstove (not 2020 cordwood certified). Choose this for more cooking volume and warming-shelf capacity; choose the Gusto for the certification stack and the dual glass.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePioneer Princess (Suppertime)\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eAmish-built USA cookstove with optional 9-gallon water reservoir, thermostatic primary air, porcelain enamel finish, no glass on firebox or oven, EPA-exempt, not mobile-home approved. The traditional homestead choice for buyers who want a wood appliance to also handle domestic hot water. Choose this for off-grid water heating; choose the Gusto for glass, modern certification, and mobile-home compatibility.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEsse Ironheart\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eUK-built premium range cooker with a 50-litre oven and a six-pan \"dog bone\" hotplate, multifuel-capable. Roughly 1.5–2× the Gusto's price, longer learning curve, smaller heating envelope. Choose this for the British range-cooker experience; choose the Gusto for North American support, lower price, and EPA 2020 certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Gusto is the cookstove anchor of the Osburn lineup. If you already trust the brand for heat, this is the version that also bakes bread.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black","offer_id":49275787149505,"sku":"OB02047+OA10268","price":6049.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel","offer_id":49275787182273,"sku":"OB02047+OA10269","price":6214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-gusto-wood-cook-stove-front-ob02047_90c5539a-3d9c-433b-b521-50377fefe14b.webp?v=1748289817"},{"product_id":"osburn-3500-wood-stove","title":"Osburn 3500 Wood Stove","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 2px solid #231F20; padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-row:first-of-type { border-top: 2px solid #231F20; }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .callout { background: #D1B382; color: #231F20; padding: 16px 18px; margin: 20px 0; font-size: 13px; line-height: 1.55; }\n  .km-desc .callout-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; margin-bottom: 8px; display: block; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 3.5 ft³ non-catalytic steel wood stove with a 130 CFM included blower, a 22-inch maximum east-west log capacity, and a cast-iron arched door with your choice of black or brushed-nickel overlay. EPA 2020 certified, mobile-home and alcove approved. The largest freestanding stove in the Osburn wood-only line.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 1,500 and 2,200 sq ft who want serious heat output from a wood-burning appliance, are willing to load wood every four to six hours when running the stove hard, and have access to seasoned hardwood at 15–20% moisture content.\u003c\/p\u003e\n\u003cp\u003eSuited to rural and suburban homes where wood-burning is permitted, where a Class A insulated chimney can be installed or an existing masonry chimney can be properly lined, and where the floor and clearances can accommodate a large pedestal stove with a 549 lb shipping weight and overall dimensions of 28 7\/8\" wide by 33 1\/2\" deep.\u003c\/p\u003e\n\u003cp\u003eMobile-home and alcove approved with the appropriate kit.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers who want set-and-forget heating. Wood stoves require active operation: lighting, monitoring stove-top temperature, closing the air at the right moment, deciding when to reload. The stove can leave usable coals by morning, but do not expect steady, high output through an entire night.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 14–20+ hour overnight burns. Non-catalytic stoves give you 6–8 hours of useful heat from a packed firebox of dense hardwood; for longer burns, a catalytic or hybrid stove is the right tool.\u003c\/p\u003e\n\u003cp\u003eNot for small spaces under 1,200 sq ft — at this firebox volume the stove can easily overheat the room at any meaningful burn rate, forcing low burns that smolder, blacken the glass, and produce creosote.\u003c\/p\u003e\n\u003cp\u003eNot for buyers in HOA or air-quality-restricted jurisdictions without first confirming local code permits a new wood-burning install. Not approved for installation in a sleeping room.\u003c\/p\u003e\n\u003cp\u003eNot for buyers shopping primarily on aesthetics. The 3500 is a working appliance with a clean cast-iron arched door, plain steel jacket, and metallic-black finish. Buyers who want enameled-tile colors, ornate cast-iron detailing, or a furniture-grade showpiece are shopping a different kind of object.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e3.5 ft³ overall \/ 2.88 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAmong the larger non-cat fireboxes in this segment. Loads up to 50 lb of cordwood when packed.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e110,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17,200–57,800 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1,000–2,700 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing is 1,500–2,200 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e71% HHV \/ 76% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eHHV is the federal standard and the figure the EPA database publishes. Optimum efficiency at low burn rate is 77% (LHV).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.6 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 limits are 2.0 g\/hr for crib-wood testing or 2.5 g\/hr for cordwood testing. The 3500 is listed as compliant with the 2020 cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 10 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 6–8 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e22 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLonger logs go east-west (sides visible). Shorter splits can be loaded over depth, north-south, which most owners prefer for overnight loads.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox — no joints to fail. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox glass surface\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 7\/8\" × 11 3\/4\"\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCeramic glass with air-wash. One of the largest viewing windows in the SBI freestanding lineup.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBlack or brushed nickel\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCast-iron arched door overlay across the front. Configurable choice at order — one overlay is required to complete the unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e130 CFM, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eVariable-speed crossflow blower (HI \/ LO \/ OFF) with included thermodisc heat sensor for automatic on\/off based on stove temperature. Included in the base price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in, top vent\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop-vent only on the freestanding stove. No rear-vent option.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e549 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eConfirm floor load and hearth pad rating before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRequires the 5-inch fresh-air intake kit and insulated intake pipe (sold separately), double-wall mobile-home venting per the manual, and attachment to the home structure. Not for installation in a sleeping room.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove install approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLower-ceiling installations permitted with manual-specified clearances.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 3500 is designed for indoor installation in a permitted residential space with a Class A insulated chimney or a properly lined masonry chimney. It is approved for mobile-home installation only when the manual's mobile-home requirements are met, including outdoor combustion air, insulated intake pipe, double-wall venting, attachment to the structure, and no sleeping-room installation. It is approved for alcove installation with the manual's reduced-ceiling clearances. It is not an outdoor appliance. Garage, shop, cabin, non-residential, or otherwise unusual installations should be cleared with the AHJ, insurer, and authorized installer before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles (USA)\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eSingle\u003c\/span\u003e\u003cspan\u003eDouble\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBack wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e13\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCorner\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 1\/4\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSide wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e14\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e14\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:14px;\"\u003eThe certification label on the back of the stove is the binding clearance for any installation. Reduced clearances are available with approved heat shields per the manual. Most installers default to double-wall connector pipe to gain the closer back-wall clearance.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eA continuous non-combustible ember-protection surface is required on combustible flooring. Steel of at least 0.015\" thickness, cement board, brick, tile over a continuous non-combustible sheet, or another approved listed material may be used. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation to prevent embers from falling through if cracks or grout separation occur. The pad must follow the manual's floor-protection diagram: in the USA, 16 inches in front of the door opening and 8 inches of side ember protection; in Canada, 18 inches in front and 8 inches on the other sides, subject to the manual notes and local code. A standard non-combustible ember-protection pad is sufficient — no insulating (R-rated) hearth pad is required.\u003c\/p\u003e\n\n\u003ch3\u003eChimney\u003c\/h3\u003e\n\u003cp\u003eThe 3500 performs best on a 6-inch flue. For new installations, a UL 103 HT (USA) or ULC S629 (Canada) Class A insulated chimney is required. Per the manual: minimum 12 feet from the stove top to the exterior chimney termination, and total system height from the floor on which the appliance sits to the top of the chimney must never be less than 15 feet. A code-compliant masonry chimney may use either a clay liner or a suitably listed stainless-steel liner. If the chimney is not 6 inches, the manual allows only limited exceptions: at least 5 inches in Canada only, or no more than 7 inches, and only when proper venting is verified and authorized by a qualified installer; otherwise use 6 inches. If a square or rectangular masonry liner is larger in cross-sectional area than a round 6-inch flue, the manual says it should be relined with a listed 6-inch stainless liner. On tall chimneys (over roughly 25–30 feet), some owners install a key damper to manage overdraft.\u003c\/p\u003e\n\n\u003ch3\u003eConnector pipe\u003c\/h3\u003e\n\u003cp\u003eThe connector pipe is the indoor stove pipe between the stove top and the start of the Class A chimney. Maximum two 90-degree elbows; double-wall is preferred for closer wall clearances and more stable draft.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eRequired for mobile-home installation. In conventional homes, the manual identifies room air as the safest and most reliable supply for combustion; almost all houses have enough natural leakage to provide what the stove needs. Outside air should be specified by the installer or used where exhaust appliances such as range hoods, dryers, or HRVs create depressurization that affects draft or causes smoke spillage. A smoke detector and carbon monoxide detector are required in the room where the stove is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 3500 stove with welded carbon-steel firebox and pedestal base\u003c\/li\u003e\n\u003cli\u003eCast-iron arched door\u003c\/li\u003e\n\u003cli\u003eChoice of cast-iron door overlay: black or brushed nickel — one is required to complete the unit\u003c\/li\u003e\n\u003cli\u003e130 CFM variable-speed blower with included thermodisc heat sensor for automatic on\/off\u003c\/li\u003e\n\u003cli\u003eAirmate convection plate\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eRefractory firebrick lining\u003c\/li\u003e\n\u003cli\u003ePull-out ash drawer\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClass A insulated chimney or stainless-steel masonry liner, sized for 6-inch flue\u003c\/li\u003e\n\u003cli\u003eConnector pipe (indoor stove pipe between stove top and Class A chimney) — double-wall preferred\u003c\/li\u003e\n\u003cli\u003eHearth pad sized to manual specifications\u003c\/li\u003e\n\u003cli\u003eOptional rigid firescreen\u003c\/li\u003e\n\u003cli\u003eOptional glass ash lip\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit — required for mobile-home installs, recommended for tight homes with strong exhaust appliances\u003c\/li\u003e\n\u003cli\u003eStove-top or flue thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 110,000 BTU\/hr figure is a maximum-output rating based on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal operation. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in a 25,000–55,000 BTU\/hr band depending on wood density, moisture, and air setting.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from owner reports in cold-climate primary use: a packed load of well-seasoned hardwood produces a fast 30-minute warm-up to high stove-top temperatures (500–700 °F), then 2–3 hours of strong sustained heat, then a slow decline (400–300 °F) over the next several hours, then several more hours of low steady heat with a heavy coal bed at 300 °F. Total useful heat from one full pack: 6–9 hours in normal heating use, occasionally approaching the 10-hour manufacturer maximum with dense hardwood, mild weather, and a full coal bed. Reload onto coals when heat output falls off and the cycle restarts.\u003c\/p\u003e\n\n\u003cp\u003eThe 22-inch maximum log capacity is a practical advantage. Most firewood suppliers cut to 16 inches, which is also the manual's recommended length. A stove that takes up to 22 inches lets you load larger splits with less labor when your supplier cuts longer. The firebox accommodates substantial north-south loads — owners regularly fit 8–10 medium splits N-S for overnight burns.\u003c\/p\u003e\n\n\u003cp\u003eThe included 130 CFM blower meaningfully improves heat distribution in open-plan rooms. There are two controls: a manual rheostat marked HI \/ LO \/ OFF that you set, and an automatic heat sensor (thermodisc) that decides when the blower actually runs. Set the rheostat to LO or HI, and the sensor handles the rest — the stove takes about an hour to reach blower-activation temperature from a cold start, then the sensor starts the blower automatically and shuts it off when the stove cools at the end of a burn. Owners consistently call out the thermodisc\/blower combination as one of the strongest features of the platform: no need to remember to start it once the fire is going or shut it off when the fire dies down. At lower settings the blower is unobtrusive; at higher settings it is audible. SBI does not publish a decibel rating.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic tube stoves, not specific to Osburn, and it is the strongest signal that your wood is too wet or your burn is too cool.\u003c\/p\u003e\n\n\u003cp\u003eThe single-lever air control on this platform has a short travel and predictable response — small adjustments produce small, consistent changes in burn rate. Use a stove-top or flue thermometer and follow the manual, installer guidance, and signs of overfire rather than running by feel.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat stove gives you simpler operation and no catalyst to replace, but you pay for it with shorter burns. If you want to load a stove at 9 PM and have meaningful heat at 6 AM, this is not the right tool — that is what a Blaze King Princess or Ashford 30 is built for. Plan on reloading every 4–6 hours during active heating and accepting that overnight will end at coals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood loading is a daily activity.\u003c\/strong\u003e A full load of dense hardwood is heavy and physically involved; in cold-climate primary-use patterns, wood handling becomes a daily chore, not an occasional task. Wood has to be split, stacked off the ground, top-covered, and seasoned to 15–20% moisture before use. Most local firewood suppliers can deliver hardwood by the cord; confirm whether they sell genuinely seasoned wood or plan to season it yourself.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload technique matters.\u003c\/strong\u003e Owners report that the door must be left open for 5–10 minutes during reload to let the new load catch — closing the door too soon causes the load to smother and smolder. East-west loading is more sensitive to this than north-south. This is a learning curve every owner of this platform mentions; once internalized, it becomes routine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e This is the non-cat tube design — secondary combustion only burns clean at higher temperatures. The fix is a daily hot burn cycle to clean off accumulated tar, dry wood at 20% moisture or below, and tolerance for a brief cleaning every few days during low-and-slow weather.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePedestal-only, single body color.\u003c\/strong\u003e The 3500 ships in metallic black on a pedestal base; the only configurable visual variable is the door overlay (black or brushed nickel). No leg option, no enamel colors. Buyers who want cast-iron legs or enameled finishes should look at cast-iron stoves with porcelain enamel options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlain styling.\u003c\/strong\u003e The 3500 has clean, simple lines: a cast-iron arched door, a steel jacket, the brand's pedestal base. It is not ornate. Owners coming from Vermont Castings, Jotul, or Woodstock cast-iron stoves describe the look as \"honest\" rather than decorative. In a basement, shop, cabin, or rural living room, that fits. In a high-design space, it may not.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTall chimney may need a key damper.\u003c\/strong\u003e Owners with chimney systems above roughly 25–30 feet sometimes install a key damper to manage overdraft. Not required, but discuss with your installer if your chimney is unusually tall.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHeavy-duty internals, functional finish.\u003c\/strong\u003e The welded carbon-steel firebox, C-Cast baffle, and lifetime weld warranty are strong points for the category. The overall fit-and-finish is practical rather than luxury: this is a heating appliance first, not a furniture-grade cast-iron showpiece.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell is strong but not toxic. Open windows, run the stove hot, expect the smell to disappear permanently after the cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes top-down lighting as an effective method on this platform — largest splits on the bottom, smaller above, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A stove-top or flue thermometer is strongly recommended; without one, you are guessing at draft, burn rate, and overfire risk. Do not elevate the fire by using a grate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 4–6 hours between reloads in active high-output use; 6–8 hours for a final overnight pack with the air shut hard. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. After loading, leave the door open at a small crack for several minutes until the new load is fully engaged before closing fully — closing too soon causes the load to smother.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The pull-out ash drawer makes daily-to-weekly removal cleaner than shoveling. The manual recommends emptying every 2–3 days during full-time heating. Always operate the stove with the ash drawer in place. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGasket replacement.\u003c\/strong\u003e The door gasket needs replacement when the dollar-bill test fails: close the door on a bill and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Materials run $20–$40; the job takes about 30 minutes. Plan for replacement every 3–5 seasons of regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect monthly during the heating season until you know your creosote-formation rate. If buildup reaches 1\/8 inch, sweep immediately. Heavy burners or those with marginally seasoned wood may need mid-season cleaning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — buy a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products, cardboard, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, ash drawer, pedestal, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCarbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top:14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, and accessory kits are openly available at fair prices through the SBI dealer and parts vendor network.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 3.5\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eMechanically identical SBI chassis — same firebox, same blower, same baffle, same emissions and efficiency, same warranty. Different cosmetic detailing in Enerzone's design language. Choose this if you prefer the Enerzone aesthetic; performance is the same.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eDrolet HT3000\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eThe budget sibling on the same SBI lineage. Same firebox and chassis architecture in a plain steel jacket without the Osburn cast-iron door overlay or finish work. Blower not always included on the HT3000. Choose this if you want the working stove without the Osburn brand premium and don't need a factory blower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Super 27\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand competitor in the 2.5 ft³ class. Smaller firebox, well-regarded operation and draft tolerance, strong North American dealer network. Choose this for a smaller home or for the Pacific Energy build philosophy; choose the Osburn 3500 for more output and larger log capacity.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eBlaze King Princess (catalytic)\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eDifferent category — catalytic technology, thermostatic air control, and 12–30 hour low-output burn potential. Choose this if your priority is overnight burn time, controllability, or off-grid heating with fewer reloads. Higher price, requires catalyst monitoring and eventual replacement, longer learning curve. The Osburn 3500 wins on simplicity, peak heat output, and dealer\/parts accessibility.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eLopi Cape Cod\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium hybrid-catalytic stove in the same heating-area class. More technology, higher price, longer burn potential than the 3500. Choose this for premium aesthetics and longer burns; choose the 3500 for simpler operation and wider parts availability.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe 3500 is the anchor of the Osburn wood-stove line. If your home is large, your winters are hard, and you trust the brand, this is the version that heats most.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black","offer_id":49275796586689,"sku":"OB03500+OA10163","price":3949.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel","offer_id":49275796619457,"sku":"OB03500+OA10164","price":4169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-3500-wood-stove-right-ob03500_dd8c330a-6072-4768-b1bc-608f1987dcb0.webp?v=1748289454"},{"product_id":"osburn-1700-i-wood-insert","title":"Osburn 1700-I Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 1.86 ft³ non-catalytic medium wood insert — the Osburn-tier version of the SBI medium-insert platform with the arched cast-iron door and configurable door overlay in Black or Brushed Nickel. EPA 2020 cordwood certified at 68% HHV efficiency, with an 18-inch maximum east-west log capacity, up to 1,800 sq ft of heating area, a 7-hour maximum burn time, 65,000 BTU\/hr maximum output, and a powerful 144 CFM heat-activated blower included as standard.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of a working masonry fireplace with a medium-sized opening who want to convert an inefficient open hearth into a serious primary heat source — up to 1,800 sq ft of zone heating capability with a 1.86 ft³ firebox, 18-inch log capacity, and a 7-hour maximum burn cycle. Reasonable insulation, access to seasoned hardwood at 15–20% moisture, and an existing masonry fireplace that meets the minimum opening dimensions (21 1\/2\" H × 27 1\/2\" W × 12 7\/8\" D per manual) are the basic requirements.\u003c\/p\u003e\n\u003cp\u003eBuyers heating 1,200–1,600 sq ft in moderate climates. The Osburn 1700-I is the medium-sized insert in the Osburn line — bigger than the smaller Osburn 950 and smaller than the Osburn Matrix Insert and Osburn 3500 Insert. For homes in the medium range, it's the right size firebox to deliver real primary winter heat without overheating the space.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the Osburn-tier aesthetic at the medium-insert size. The 1700-I shares its mechanical platform with the Enerzone Solution 1.7-I (same firebox, same blower, same efficiency, same emissions, same burn cycle) but ships with the configurable cast-iron door overlay in Black or Brushed Nickel — a customization layer the Enerzone version doesn't offer.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a customizable Osburn aesthetic. The arched cast-iron door accepts a configurable door overlay in Black or Brushed Nickel, paired with a matching faceplate (Regular or Large) and trim in the same finish.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers without an existing code-compliant masonry fireplace. Wood inserts must be installed inside a lined masonry fireplace with a continuous stainless-steel chimney liner running the full height. This insert is not approved for factory-built (prefab) metal fireplaces, mobile homes, or any installation outside a masonry hearth.\u003c\/p\u003e\n\u003cp\u003eNot for buyers needing to heat more than 1,800 sq ft as primary winter heat. For larger spaces, step up to the Osburn Matrix Insert (75,000 BTU, larger firebox) or the Osburn 3500 Insert.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. The 7-hour manufacturer maximum is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 5–6 hours. For longer burns, step up a firebox size or consider catalytic technology.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.86 ft³ overall \/ 1.44 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Medium firebox sized for zone heating across 500–1,800 sq ft. The overall figure includes a buffer zone above the EPA loading line; the 1.44 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e65,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e9,800–52,200 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. A notably wide tested range — the Osburn 1700-I delivers usable heat from very low burn rates (shoulder-season) up to strong cold-snap output.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–1,800 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,000–1,500 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e68% HHV \/ 73% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e76% optimum overall efficiency at low burn rate; 75% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. EPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The insert is listed as compliant with the 2020 cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 7 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 5–6 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLogs load across the width of the firebox, sides visible from the door. 2-inch margin over standard 16-inch supplier cuts.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with an arched cast-iron glazed door. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e15 3\/4\" × 9 3\/8\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eArched ceramic glass with air-wash, 5\/32\" (4 mm) thick, tested to 1,400 °F per manual. Replacement must be SCHOTT ceramic with the same specification — tempered or ordinary glass will not withstand the operating temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, up to 144 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Powerful double-cage heat-activated blower with rheostat speed control and thermodisc auto-on. Without the blower, heat distribution from an insert relies almost entirely on radiant heat through the glass — most of the firebox is enclosed in the masonry cavity, so the blower is what gets the heat into the room.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Liner must conform to UL 1777 (USA), CAN\/ULC-S635, or CAN\/ULC-S640 (Canada). Per manual, minimum liner height 15 feet. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e19 5\/8\" W × 13 1\/2\" D × 11 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manual. Designed for east-west loading across the width of the firebox. North-south loading is not practical at this depth.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/4\" W × 8 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening. Accommodates 18-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21 1\/2\" H × 27 1\/2\" W × 12 7\/8\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Confirm fireplace dimensions before ordering. See \"Where it can go\" for faceplate options.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e361 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling. Remove loose internal components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn 1700-I is approved only for installation inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. It is not approved for installation in factory-built (prefab) metal fireplaces, in mobile or manufactured homes, in alcoves, or as a freestanding unit. The masonry fireplace and chimney must be inspected before installation for cracks, loose mortar, creosote, blockage, or other signs of deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e21 1\/2\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27 1\/2\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e12 7\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the width. Plan for a small installation margin above the insert to seat the liner adapter — an opening exactly at the minimum will be a tight install. Measure carefully before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eFaceplate size\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eFinish\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRegular (29\" × 44\")\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eBlack or Brushed Nickel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eLarge (32\" × 50\")\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eBlack or Brushed Nickel\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eTrim color matches the faceplate finish. The cast-iron door overlay is selected separately in Black or Brushed Nickel — most buyers match both. Selected at order, not field-swappable.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAdjacent combustible side wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible side or top surround\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e9\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible mantel shelf\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible top surround projection\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform \/ floor protection to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"data-head\" style=\"margin-top: 18px;\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMax thickness\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side surround\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible mantel shelf projection\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e12\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eReduced clearances are not available by means of heat shields on this insert — the figures above are the binding minimums.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFloor protection requirements depend on whether the existing masonry hearth is raised 4 inches or more above the surrounding combustible floor. If the hearth is raised 4 inches or more, a non-combustible floor protector with no R-value is required and must extend at least 16 inches in front of the unit in the USA, 18 inches in Canada. If the hearth is raised less than 4 inches, a non-combustible floor protector with an R-value of at least 1.00 is required and must extend at least 22 inches in front of the unit. The manual includes a thermal-resistance lookup table for common floor protection materials (brick, cement board, ceramic tile, marble) to calculate the required R-value combination.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 1700-I requires a continuous 6-inch stainless-steel chimney liner extending from the insert flue collar to the top of the chimney. The liner must conform to ULC S635 or CAN\/ULC-S640 (Canada) or UL 1777 (USA) and be rated for solid fuel. The minimum liner height is 15 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\u003cp\u003eIf the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed. A sheet-metal block-off plate (or, in Canada per CSA B365, mineral wool packing around the liner) is recommended at the throat to reduce cold-air backdraft into the room. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air or for tight new-construction homes with mechanical ventilation. The fresh-air intake adapter installs on either the left or right side of the insert (the unused side is covered by a plate supplied in the owner's manual kit). A smoke detector and carbon monoxide detector are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 1700-I wood insert (OB01705) with welded carbon-steel firebox and arched cast-iron glazed door\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required door overlay and faceplate\/trim selections — see \"Where it can go\" for the options\u003c\/li\u003e\n\u003cli\u003e144 CFM heat-activated double-cage blower assembly with rheostat speed control and thermodisc auto-on\u003c\/li\u003e\n\u003cli\u003eAsh lip\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eHigh-density refractory firebrick lining\u003c\/li\u003e\n\u003cli\u003eLiner fixation brackets and hardware\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, with R-value of at least 1.00 if hearth is raised less than 4 inches\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for code jurisdictions requiring outside combustion air or for tight new-construction homes\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch × 4' insulated flex pipe for fresh-air intake (SBI AC02090) — HVAC type, ULC S110 or UL 181 class 0 or class 1\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper (SBI AC01349) — closable outside-air damper; do not close while the insert is in use\u003c\/li\u003e\n\u003cli\u003eOptional liner hook-up system (SBI AC02006) — simplifies liner-to-flue-collar connection\u003c\/li\u003e\n\u003cli\u003eOptional offset liner adapter (SBI AC01214) — for installations where the chimney throat geometry requires offset connection\u003c\/li\u003e\n\u003cli\u003eOptional rigid fire screen (SBI AC01299) — not permitted for open-door use in the United States or in Canadian provinces\/jurisdictions with particulate-emission limits; never leave the insert unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional tempered glass hearth pad 10mm 18\" × 50\" (SBI AC02760)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 65,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 9,800–52,200 BTU\/hr band per the CSA B415.1-10 stack-loss method. That's a notably wide range — the Osburn 1700-I delivers usable heat from very low burn rates suitable for shoulder-season heating, up through strong sustained output for cold-snap winter heating.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a 30–45 minute warm-up, 2 hours of strong sustained heat once the firebox and surrounding masonry come up to temperature, then a gradual decline over the next 2–3 hours with a coal bed remaining. Total useful heat from one full pack is realistically 5–6 hours, occasionally approaching the 7-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. This is one of the underappreciated benefits of an insert versus a freestanding stove — the masonry stores and releases heat on its own cycle. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe 144 CFM heat-activated blower is what gets the heat into the room. Because most of the insert's firebox sits inside the masonry cavity, the radiant heat that would otherwise reach the room from a freestanding stove is partly absorbed by the surrounding brick. The convection jacket around the firebox captures that heat and the blower pushes it out into the room. The 144 CFM rating is notably stronger than the 90 CFM blowers used on smaller inserts in the line — more aggressive heat distribution and more effective at moving heat out of the masonry cavity.\u003c\/p\u003e\n\n\u003cp\u003eAllow the insert to reach operating temperature (approximately one hour from a cold start) before turning the blower to high speed. Per the manual, turning the blower on too early during start-up pulls heat away from the firebox and slows the build-up to clean combustion.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic inserts, not specific to Osburn.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eInsert, not a freestanding stove.\u003c\/strong\u003e The Osburn 1700-I requires an existing masonry fireplace plus a full stainless-steel chimney liner — there's no other approved installation path. Buyers without a masonry fireplace should look at the Osburn 1700 freestanding stove (same firebox platform, no masonry requirement) instead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMedium firebox platform.\u003c\/strong\u003e The Osburn 1700-I is the middle size in the Osburn insert line — bigger than the Osburn 950, smaller than the Osburn Matrix Insert and Osburn 3500 Insert. For buyers in the 1,200–1,600 sq ft range it's the right fit; outside that range, step up or down.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSame chassis as the Enerzone twin.\u003c\/strong\u003e The 1700-I and the Enerzone Solution 1.7-I share the same SBI medium-insert chassis. Same firebox, same blower, same baffle, same burn time, same 68% HHV efficiency, same 2.4 g\/hr emissions, same warranty schedule. The differences are aesthetic and brand-tier: the Osburn adds the configurable cast-iron door overlay (Black or Brushed Nickel) on top of the faceplate\/trim choices and is positioned in the premium Osburn tier. Choose the Osburn for the door-overlay configurability and the premium positioning; choose the Enerzone for the silver-grooved styling at the Enerzone price point.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePowerful blower, audible blower.\u003c\/strong\u003e The 144 CFM blower delivers strong heat distribution but is more audible than the 90 CFM blowers used on smaller inserts. The rheostat lets you dial speed down for quieter operation when the room is up to temperature; high speed is most useful during the active heat-output phase of the burn cycle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e7-hour maximum burn is medium-class, not long-burn.\u003c\/strong\u003e A 1.86 ft³ non-cat insert gives you meaningful primary-heat capability across 1,200–1,600 sq ft, with realistic 5–6 hour burn cycles. If you want true 8+ hour overnight burns, step up to the Osburn Matrix Insert or to a catalytic insert with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 1,800 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across medium inserts is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~1,500 sq ft as primary winter heat in a cold climate or older home, step up a firebox size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe blower is essential, not optional.\u003c\/strong\u003e Unlike a freestanding stove where the blower meaningfully improves heat distribution, on an insert the blower is what gets the heat into the room at all. Most of the firebox sits inside the masonry cavity, which absorbs radiant heat. The insert will run safely without the blower (useful in a power outage), but day-to-day heat into the room depends on the blower being on and working.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eExisting fireplace dimensions are non-negotiable.\u003c\/strong\u003e The masonry opening must meet the manual's minimum dimensions (21 1\/2\" H × 27 1\/2\" W × 12 7\/8\" D). The Large faceplate can cover a larger opening, but cannot compensate for an undersized one. Measure before purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration is a one-time decision.\u003c\/strong\u003e Door overlay color, faceplate size, and trim finish are all configured at order, not field-swappable. The combinations let the insert fit many room layouts and aesthetics, but choose the configuration that matches the fireplace you're installing into — measure the opening and confirm the look before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2.4 g\/hr emissions is mid-pack.\u003c\/strong\u003e The Osburn 1700-I is within the EPA 2020 cordwood limit (2.5 g\/hr) but not class-leading on emissions. Buyers specifically wanting lower emissions for an EPA non-attainment county should compare against cross-shops or larger fireboxes with lower published rates.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first few fires cure the high-temperature paint and condition the internal components. Burn two or three small fires first, then build bigger, hotter fires until the paint smell is gone. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e Per the manual's EPA loading procedure, the recommended method is a bottom-up build: split a start-up fuel log into 6 pieces, criss-cross them at 45 degrees on the firebrick in three rows from smallest to biggest, criss-cross 12–15 kindling pieces on top in three rows, place newspaper on top, and light. Leave the door slightly ajar (about 1 minute to 1:30) until the kindling is fully engaged, then close and latch the door with the air control fully open.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located underneath the ash shelf. Pull the handle completely toward you to open (HIGH burn rate). Push completely to close (LOW burn rate). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. The manual specifies closing the primary air control by small increments (about 1\/16 inch at a time) between 4 and 15 minutes after a reload — too fast and the fire smolders.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 2–3 hours between reloads in active heating use; up to 6 hours for a final overnight pack with the air shut hard. Per the manual's loading procedure, rake remaining charcoal toward the front of the firebox before loading. Place three logs east-west on the coal bed leaving about 1–2 inches of air space between the rear firebrick and the first piece, then two more logs slightly angled on top. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load, close the door, and run the air open until the load is fully engaged before reducing gradually. Do not elevate the fire by using a grate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e Do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e Empty ash every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door. The latch mechanism is adjustable — remove the split pin with pliers and turn the handle one counterclockwise turn to increase pressure. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor alignment.\u003c\/strong\u003e Per the manual, the door hinges are adjustable. If the door drifts out of alignment over time, loosen the pressure screws on the upper and lower hinges with a 3\/32\" Allen key, turn the adjustable hinge rods with a flat screwdriver to bring the door back into square, then retighten the hinge pressure screws. Routine adjustment, not a warranty issue.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes can be removed for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRemovable carbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 1.7-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eEnerzone-branded twin on the same SBI medium-insert chassis. Mechanically identical — same 1.86 ft³ firebox, same 65,000 BTU\/hr maximum, same 18-inch log capacity, same 144 CFM blower, same 68% HHV efficiency, same 2.4 g\/hr emissions, same 7-hour burn time. The difference is aesthetic and brand tier: the Osburn adds the configurable cast-iron door overlay (Black or Brushed Nickel) on top of the faceplate\/trim choices; the Enerzone has the silver-grooved styling without the door-overlay configurability. Choose the Osburn 1700-I for the door-overlay customization and the premium Osburn positioning; choose the Enerzone for the silver-grooved styling at the Enerzone price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700 Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eFreestanding equivalent on the same firebox platform — same 1.86 ft³ firebox, same 65,000 BTU\/hr maximum output, same 18-inch log capacity. Osburn brand finish with the same door overlay configuration in Black or Brushed Nickel. Choose the Osburn 1700 if you don't have an existing masonry fireplace, or if you want a freestanding stove for visual presence and full radiant heat in the room; choose the Osburn 1700-I if you have a masonry fireplace to convert.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Matrix Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-up sibling in the Osburn insert line. Larger 2.4 ft³ firebox, 75,000 BTU\/hr maximum, 500–2,100 sq ft heating range, 20-inch log capacity, 8-hour maximum burn. Contemporary cast-iron flush-mount aesthetic rather than the 1700-I's configurable door overlay. Choose the Matrix Insert if you need to heat over 1,800 sq ft, want 20-inch logs, or want longer burn cycles; choose the 1700-I for medium spaces and a smaller masonry opening.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Vista Insert LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand competitor in the medium-small insert class. 1.6 ft³ firebox, 56,000 BTU\/hr maximum, 1.9 g\/hr emissions, 72% HHV efficiency, 17-inch maximum log. Pacific Energy's reliable single-lever non-cat technology, premium build, higher price. Slightly smaller firebox than the 1700-I but in the same general size class. Buyers cross-shopping for medium masonry inserts often compare these two.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Osburn 1700-I is the medium-sized wood insert in the Osburn line — the same SBI chassis as the Enerzone Solution 1.7-I, distinguished by the configurable cast-iron door overlay in Black or Brushed Nickel and the premium Osburn positioning. Measure the opening, install it right, burn good wood, and it carries you through winter.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Black","offer_id":49275867234497,"sku":"OB01705-OA10249+OA10116+OA10128","price":3189.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Brushed Nickel","offer_id":49275867300033,"sku":"OB01705+OA10249+OA10116+OA10129","price":3189.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large Black","offer_id":49275867627713,"sku":"OB01705+OA10249+OA10117+OA10128","price":3249.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large Brushed Nickel","offer_id":49275867693249,"sku":"OB01705+OA10249+OA10117+OA10129","price":3249.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Black","offer_id":49275867267265,"sku":"OB01705+OA10250+OA10116+OA10122","price":3354.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Brushed Nickel","offer_id":49275867332801,"sku":"OB01705+OA10250+OA10116+OA10123","price":3354.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Large Black","offer_id":49275867660481,"sku":"OB01705+OA10250+OA10117+OA10128","price":3414.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Large Brushed Nickel","offer_id":49275867726017,"sku":"OB01705+OA10250+OA10117+OA10129","price":3414.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-1700-i-wood-insert-front-ob01705.webp?v=1748290582"},{"product_id":"osburn-matrix-1900-wood-insert","title":"Osburn Matrix 1900 Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 1.1 ft³ non-catalytic small wood insert built around a magnificent cast-iron decorative faceplate with patterned upper louver and framing columns. EPA 2020 cordwood certified at 1.5 g\/hr particulate emissions with 75% HHV efficiency, 45,000 BTU\/hr maximum output, 17-inch maximum east-west log capacity, up to 7-hour maximum burn time, and a 90 CFM heat-activated blower included as standard. Configurable Black or Brushed Nickel cast-iron door overlay. The Osburn-styled sibling of the Enerzone Destination 1.9.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of an existing masonry fireplace who want real heat output instead of a decorative open fire, in a single main-floor room, an open-plan small home, a finished basement family room, or a cottage of roughly 500–900 sq ft, with reasonable insulation and access to seasoned hardwood at 15–20% moisture content.\u003c\/p\u003e\n\n\u003cp\u003eSuited to homeowners whose existing masonry opening is on the smaller side — the Matrix 1900's tapered top and sides plus 15 1\/2\" minimum hearth depth let it fit openings that exclude wider or deeper inserts. The cast-iron decorative faceplate, patterned upper louver, framing columns, and recessed flush-mount blower with hidden air-control handle deliver a more finished face than most inserts in this category.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who prefer the Osburn aesthetic — premium cast-iron detailing, Black or Brushed Nickel door overlay configurability — over the plainer Enerzone Destination 1.9, which uses the same chassis at a lower price.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers who want set-and-forget heating. Wood-burning inserts require active operation: lighting, monitoring, closing the air at the right moment, deciding when to reload. The 1.1 ft³ firebox can leave usable coals after a long burn, but do not expect steady, high output through an entire night.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers expecting 8–14+ hour overnight burns. A small non-catalytic firebox gives you 3–4 hours of useful heat from a packed load of dense hardwood, occasionally up to 5 in mild weather. For longer burns, a catalytic or hybrid insert is the right tool.\u003c\/p\u003e\n\n\u003cp\u003eNot for whole-house primary heat in larger or older homes. The manufacturer's stated 1,200 sq ft upper range is achievable only in well-insulated, open-plan, moderate-climate conditions; in real-world use this is a one-room or one-zone insert, not a whole-house heater.\u003c\/p\u003e\n\n\u003cp\u003eNot for prefab metal fireplaces — those need a different appliance entirely. Not approved for mobile-home or alcove installation.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers without a code-compliant masonry fireplace and chimney. The Matrix 1900 requires a continuous 6-inch stainless-steel chimney liner running the full height; that liner and its installation are not included in the appliance price.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat insert but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.1 ft³ overall \/ 1.03 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Small firebox sized for one room or one zone, not whole-house heat. The overall figure includes a buffer zone above the EPA loading line; the 1.03 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e45,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower — the manufacturer's tested operating band lands well below this peak.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e8,471–31,700 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around — from a steady low burn at the bottom of the range up through a strong high-output cycle in the upper end.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e250–1,200 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 500–900 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75% HHV \/ 80% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e82% optimum overall efficiency at low burn rate; 78% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.5 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer's published spec table. EPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The Matrix 1900 is well below the federal cordwood limit.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 7 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 3–4 hours, occasionally up to 5 in mild weather.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLimited margin over the 16-inch standard supply cut. Verify your firewood supply before buying. Logs load across the width of the firebox, sides visible from the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron faceplate and door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with a cast-iron decorative faceplate and a glazed cast-iron door. 3\/16\" body, 3\/16\" top. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBlack or Brushed Nickel\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCast-iron door overlay across the front of the door. Configurable at order — one overlay is required to complete the unit. The signature Osburn finish detail that distinguishes the Matrix 1900 from the plainer Enerzone Destination 1.9.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18\" × 8 1\/8\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eArched ceramic glass with air-wash, 5\/32\" (4 mm) thick. Replacement glass must be SCHOTT ceramic with the same specification — tempered or ordinary glass will not withstand the operating temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, 90 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePremium-quality variable-speed tangential blower with rheostat speed control and thermodisc auto-on. Flush-mounted, recessed behind the lower louver so it disappears into the faceplate detailing.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Liner must conform to UL 1777 (USA), CAN\/ULC-S635, or CAN\/ULC-S640 (Canada). Per manual, minimum chimney height 12 feet. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 3\/4\" W × 12 3\/8\" D × 8 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Designed for east-west loading across the width of the firebox. The deep bottom of the combustion chamber allows ash to accumulate and reduces cleanout frequency.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 1\/4\" W × 7 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eHorizontal loading door opening. Accommodates 17-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e36\" W × 21\" D × 23 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions including the cast-iron decorative faceplate.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e19\" H × 25\" W × 15 1\/2\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Smaller masonry opening requirement than mid- or large-size inserts in this line — the Matrix 1900 fits hearths that won't take a larger insert. Measure carefully before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e332 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for two-person handling minimum. Strip removable components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNot certified for mobile-home installation under any configuration.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Matrix 1900 is approved only for installation inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. It is not approved for installation in factory-built (prefab) metal fireplaces, in mobile or manufactured homes, in alcoves, or as a freestanding unit. The masonry fireplace and chimney must be inspected before installation for cracks, loose mortar, creosote, blockage, or other signs of deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e19\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e25\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e15 1\/2\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the minimum width. Plan for working room above the insert to seat the liner adapter and route the offset elbow — an opening exactly at the minimum will be a tight install. Borderline openings frequently require removal of the masonry damper assembly and a stainless offset elbow between the insert flue collar and the liner.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eConfiguration\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eSize\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eStandard faceplate (included)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e23 7\/8\" × 36\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCuttable faceplate (optional, SBI AC02082)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e32\" × 44\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe standard cast-iron decorative faceplate covers most masonry openings. For larger openings, the optional 18-gauge cuttable faceplate extends the cover area — the edges can be trimmed to contour an arched fireplace or to minimize visible flashing. The door overlay (Black or Brushed Nickel) is configured at order — one overlay is required to complete the unit.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAdjacent combustible side wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible side mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible top mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e34\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eMantel shelf to base of fireplace\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e34\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform \/ floor protection to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e72\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe certification label on the back of the insert always overrides clearance figures published elsewhere. Reduced clearances are not available by means of heat shields on this insert — the figures above are the binding minimums.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eThe hearth extension must be a continuous non-combustible surface in front of the door opening. Floor protection requirements depend on whether the existing masonry hearth is raised above the surrounding combustible floor and whether it extends sufficiently in front of the appliance. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation. If the existing masonry hearth extension is long enough and raised more than 5 inches above the combustible floor, standard non-combustible ember protection may be sufficient. If the masonry hearth is level with, or only slightly raised above, the surrounding combustible floor, an R-value floor protector may be required per the manual's floor-protection worksheet. Final hearth protection must be calculated from the manual and approved by the installer\/AHJ.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe Matrix 1900 requires a continuous 6-inch stainless-steel chimney liner extending from the insert flue collar to the top of the chimney. The liner must conform to ULC S635, CAN\/ULC-S640 (Canada) or UL 1777 (USA) and be rated for solid fuel. The minimum liner height is 12 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eThe Matrix 1900 performs best with a 6-inch stainless-steel chimney liner. In the USA, use a 6-inch liner listed to UL 1777. In Canada only, connection to a chimney liner of at least 5 inches may be permitted if it properly vents combustion gases, the total masonry chimney height is greater than 20 feet, and the application is verified and authorized by a qualified installer. The insert is not approved for a positive flue connection to clay tile — a continuous stainless liner is required.\u003c\/p\u003e\n\n\u003cp\u003eIf the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed. A sheet-metal block-off plate sealed at the damper level (or, in Canada per CSA B365, mineral wool packing around the liner) is recommended at the throat to reduce cold-air backdraft and to allow the insert to deliver rated performance — without it, jacket-recovered heat is lost into the smoke chamber. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional 5-inch fresh-air intake kit is available for code jurisdictions requiring outside combustion air or for tight new-construction homes with mechanical ventilation. In conventional homes the manual identifies room air as the safest and most reliable supply for combustion; almost all houses have enough natural leakage to provide what the insert needs. A smoke detector and carbon monoxide detector are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn Matrix 1900 wood insert (OB01900) with welded carbon-steel firebox and cast-iron glazed door\u003c\/li\u003e\n\u003cli\u003eCast-iron decorative faceplate with patterned upper louver and framing columns (23 7\/8\" × 36\")\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required door overlay selection — see \"Where it can go\" for the options\u003c\/li\u003e\n\u003cli\u003e90 CFM premium-quality flush-mounted variable-speed tangential blower with rheostat speed control and thermodisc auto-on\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eMoulded refractory bricks lining\u003c\/li\u003e\n\u003cli\u003eRemovable wood-grip air-control handle\u003c\/li\u003e\n\u003cli\u003eLiner fixation brackets and hardware\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, with continuous non-combustible sheet beneath any tile\u003c\/li\u003e\n\u003cli\u003eSheet-metal block-off plate, high-temp silicone, and mineral wool insulation — effectively required in practice for the insert to deliver rated performance\u003c\/li\u003e\n\u003cli\u003eStainless offset elbow at the insert collar (15° or 30°) — needed on most installs where the masonry flue is offset from the insert\u003c\/li\u003e\n\u003cli\u003eInsulation wrap for the liner (or a pre-insulated liner) — strongly recommended for all installs, code-required in some\u003c\/li\u003e\n\u003cli\u003eOptional 32\" × 44\" cuttable faceplate, 18 GA (SBI AC02082) — for masonry openings larger than the standard faceplate covers\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for code jurisdictions requiring outside combustion air or for tight new-construction homes\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch × 4' insulated flex pipe for fresh-air intake (SBI AC02090) — HVAC type, ULC S110 or UL 181 class 0 or class 1\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper (SBI AC01349) — do not close while in use\u003c\/li\u003e\n\u003cli\u003eOptional rigid firescreen (SBI AC01213) — for occasional attended fire viewing only where permitted by local code and only when used exactly as instructed in the fire screen manual; never leave the insert unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional liner hook-up system (SBI AC02006) — simplifies liner-to-flue-collar connection\u003c\/li\u003e\n\u003cli\u003eOptional offset liner adapter (SBI AC01214) — for installations where the chimney throat geometry requires offset connection\u003c\/li\u003e\n\u003cli\u003eOptional tempered glass hearth pad 10mm 18\" × 50\" (SBI AC02760)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 45,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood with the air control fully open in the first hour or so of a high-burn cycle. It is real, but it is a peak rating, not the average output across a full burn cycle of normal operation. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 8,471–31,700 BTU\/hr band per the CSA B415.1-10 stack-loss method — a wide range covering shoulder-season heating on the low end and strong sustained output for cold-snap heating on the high end.\u003c\/p\u003e\n\n\u003cp\u003eA realistic operating day in a well-insulated 600–800 sq ft open-plan room: morning reload on warm coals produces a fast 60-minute warm-up and 2–3 hours of strong output; mid-afternoon reload sustains heat through evening; a final pack at bedtime gives 3–4 hours of useful heat with the air shut down, leaving coals by morning. With seasoned oak, maple, hickory, or beech, expect 3–4 hours of useful heat per packed load; with birch, pine, or softer wood, 2–3.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe 17-inch maximum log capacity has limited margin over the 16-inch standard supplier cut. Confirm your firewood supply before buying — even a half-inch over forces awkward angled loading. The practical loading depth is closer to 14–15 inches once you account for the air gap behind the glass; nobody loads logs hard against the air-wash. Plan firewood cuts accordingly.\u003c\/p\u003e\n\n\u003cp\u003eThe included 90 CFM tangential blower meaningfully improves heat transfer from the air jacket into the room. Because most of the insert's firebox sits inside the masonry cavity, the radiant heat that would otherwise reach the room from a freestanding stove is partly absorbed by the surrounding brick. The convection jacket around the firebox captures that heat and the blower pushes it out into the room. The thermodisc handles automatic on\/off based on insert temperature — set the rheostat and the sensor decides when the blower actually runs. The insert takes about an hour to reach blower-activation temperature from a cold start, then the sensor starts the blower automatically and shuts it off when the insert cools at the end of a burn. At lower settings the blower is unobtrusive; at higher settings it is audible. Blower noise is the most consistent owner complaint on this platform.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates — particularly overnight loads with the air choked down — the small firebox produces less velocity over the glass than larger inserts, and tar will form on the lower edges and corners. This is universal to non-catalytic small inserts in this class, not specific to Osburn.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eSmall firebox, short burns.\u003c\/strong\u003e A 1.1 ft³ non-cat insert gives you simpler operation and lower up-front cost than a hybrid or catalytic, but you pay for it with shorter burns. If you want to load at 9 PM and have meaningful heat at 6 AM, this is not the right tool. Plan on reloading every 2–3 hours during active heating and accepting that overnight will end at coals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 1,200 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across small SBI inserts is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~900 sq ft as primary winter heat, step up a firebox size — the Osburn 1700-I, Pacific Energy Super, or a hybrid all give meaningfully more usable heat for the same operational effort.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFlush insert depends on the blower.\u003c\/strong\u003e The Matrix 1900's flush design means most heat transfer to the room runs through the air jacket and out via the 90 CFM blower. Without the blower, output is largely radiant through the glass — usable, but a fraction of the rated convective performance. Buyers who want to heat without electricity dependence should consider a protruding insert or a freestanding stove.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower noise is a known complaint.\u003c\/strong\u003e Owner reports on this platform consistently cite blower vibration and audibility as the platform's most consistent weakness. SBI's design is intentional — slower, hotter air rather than higher CFM cool air — but at higher rheostat settings the blower is audible. Several owners report rattling at certain conditions; if vibration or hum develops, have the installer or dealer inspect blower mounting, clearances, and service parts rather than improvising modifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNo ash lip on the flush design.\u003c\/strong\u003e The Matrix 1900 ships without an ash lip — common on flush inserts. Ash spilled at the door opening can be drawn into the blower intake. Plan for careful loading technique, a small hearth-side ash brush, and turning the blower OFF before opening the door fully.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running 22–25% moisture wood. The advanced combustion features only work in the 15–20% range. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat tube inserts in this firebox class. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this insert. Owners chasing always-clear glass on long, slow burns should look at catalytic technology.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLiner, block-off plate, and labor are not in the appliance price.\u003c\/strong\u003e The insert is the appliance; the chimney liner, the block-off plate, the insulation wrap, and the professional installation are separate purchases that need to be planned for. Older or taller chimneys, offset flues, and damper-frame removal add to install complexity. Skipping the liner, the block-off plate, or the insulation wrap saves money up front and costs measurable performance and creosote durability after.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePremium finish, mid-tier output.\u003c\/strong\u003e The cast-iron decorative faceplate, patterned upper louver, framing columns, cast-iron arched door, C-Cast baffle, lifetime weld warranty, and recessed flush blower are strong fit-and-finish points for a small insert. The trade-off is firebox size — this is a beautifully finished small insert, not a high-output workhorse.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration is a one-time decision.\u003c\/strong\u003e Door overlay color (Black or Brushed Nickel) is configured at order, not field-swappable. Choose the configuration that matches the fireplace you're installing into.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in. Run the insert hot and expect the smell to disappear permanently after the cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes a top-down conventional method as effective on the Matrix 1900 — small splits at the base, smaller splits crossed over them, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature. Leave the door slightly ajar for about 5 minutes during light-off; close once the fire is well established. The manual also describes an EPA-style loading procedure for cleanest combustion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e The control is located above the door and uses a removable wood-grip handle that clips into the lower louver. Slide the handle onto the air-control stem only when adjusting; do not leave it on during use, as the metal stem gets very hot. Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. Closing too fast and the fire smolders. A flue thermometer is strongly recommended; without one, you are guessing at draft, burn rate, and overfire risk.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 2–3 hours between reloads in active heating use; up to 4 hours for a final overnight pack with the air shut hard. Rake remaining charcoal toward the front of the firebox before loading — this concentrates the coals near where most of the combustion air enters and helps ignite the new load. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load, close the door, and run the air open until the load is fully engaged before reducing gradually. Turn the blower OFF before opening the door fully to reduce ash disturbance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCarbon monoxide watch.\u003c\/strong\u003e Per the manual, if the firebox no longer shows flame but still contains unburned logs, check outside for smoke from the chimney. Smoke without flame means the fire is air-starved and CO levels are rising. Open the door slightly, move the logs with a poker, create a passage for air by making a trench in the ember bed, and add small kindling-size pieces to restart combustion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Matrix 1900 uses a hollow-bottom firebox; ash is scooped manually from the front. The deep combustion-chamber bottom allows ash to accumulate longer than shallower designs, reducing cleanout frequency. The manual recommends emptying every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days and releases carbon monoxide. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door, not just at the latch. The latch mechanism is adjustable — remove the split pin with pliers and turn the handle one counterclockwise turn to increase pressure. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney and liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the manual specifically calls for lubrication. If the blower fails to engage automatically when the insert reaches operating temperature, have the installer or dealer inspect the thermodisc mounting and contact with the insert body — improper seating is the most common cause of auto-activation issues on small SBI inserts. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefractory bricks and baffle.\u003c\/strong\u003e The intense heat of the fire can cause slight cracks in the refractory bricks — minor cracks do not reduce effectiveness. Inspect periodically and replace any wider cracks. The baffle and secondary tubes can be removed for sweep access and inspection. Operation with a cracked or missing baffle may cause unsafe temperatures and voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChimney fire response.\u003c\/strong\u003e If a chimney fire occurs: close the insert door and the air-intake control, alert occupants, contact the fire department if assistance is needed, use a dry chemical fire extinguisher or baking soda or sand to control the fire (never water — it causes a dangerous steam explosion), and do not use the appliance again until the insert and chimney have been inspected by a qualified chimney sweep or fire-department inspector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney. Do not burn compressed logs made of wax-impregnated sawdust or logs with chemical additives; 100% compressed-sawdust logs can be used with caution.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRemovable carbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Destination 1.9 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eMechanically identical SBI chassis — same 1.1 ft³ firebox, same 45,000 BTU\/hr maximum, same 17-inch log capacity, same 90 CFM blower, same 75% HHV efficiency, same 1.5 g\/hr emissions, same 7-hour burn time, same minimum masonry opening, same warranty schedule. The Destination 1.9 is the plainer Enerzone-branded sibling at a lower price point; the Matrix 1900 adds the cast-iron decorative faceplate with patterned upper louver and framing columns plus Black or Brushed Nickel door overlay configurability. Choose the Matrix 1900 for the Osburn finish detailing; performance is the same.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-up sibling in the Osburn insert line. Larger 1.86 ft³ firebox, 65,000 BTU\/hr maximum, 500–1,800 sq ft heating range, 18-inch log capacity, 144 CFM blower, 68% HHV efficiency. Larger masonry opening required (21 1\/2\" × 27 1\/2\" × 12 7\/8\"). Configurable Regular\/Large faceplate in Black or Brushed Nickel plus configurable door overlay. Choose the 1700-I for larger spaces and longer log capacity; choose the Matrix 1900 for smaller masonry openings, higher published efficiency, and the Matrix decorative faceplate aesthetic.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eDrolet Escape 1500-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSBI sibling under the Drolet brand. Larger 1.9 ft³ overall firebox at a lower price point, with the shallowest depth in class (12 3\/4\") and an 18-inch log capacity. Wider 27 1\/2\" minimum opening, so it won't fit some smaller hearths the Matrix 1900 will. Same SBI parent, same warranty schedule, plainer styling without the cast-iron decorative faceplate.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Neo 2.5 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand step-up. 2.0 ft³ firebox, premium build, sealed-firebox technology with single-lever non-cat operation, longer realistic 6–8 hour burns, better heat retention. Won't fit the smallest hearths and typically costs more delivered. The most-mentioned cross-shop on hearth-enthusiast forums when buyers compare to the Matrix 1900 — Pacific Energy fit-and-finish at a higher price point versus the SBI dealer\/parts accessibility and the Osburn finish detailing.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Matrix 1900 is the dressed-up sibling of the Enerzone Destination 1.9 — same chassis, same heat, same install. What you're buying is the cast-iron decorative faceplate, the configurable door overlay, and the Osburn finish detailing. If those matter to the room, and the masonry opening is in the right size range, this is the right one.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black","offer_id":49276792078529,"sku":"OB01900+OA10041","price":2349.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel","offer_id":49276792111297,"sku":"OB01900+OA10042","price":3514.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-matrix-1900-wood-insert-ob01900-front-view_481d87cb-4f22-47ca-b9ab-e2de1cbf0a5f.webp?v=1748290458"},{"product_id":"osburn-2000-i-wood-insert","title":"Osburn 2000-I Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; 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gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.4 ft³ non-catalytic medium-large wood insert built around a traditional cast-iron door with a 17 1\/8\" × 10 1\/4\" ceramic glass viewing window and a configurable faceplate system — choose Regular (29\" × 44\") or Large (32\" × 50\") with optional Black or Brushed Nickel trim packages, plus an optional Black or Brushed Nickel steel door overlay. EPA 2020 cordwood certified at 2.3 g\/hr particulate emissions, 72% HHV efficiency, 75,000 BTU\/hr maximum output, 20-inch maximum east-west log capacity, up to 8-hour maximum burn time, and a 144 CFM variable-speed blower included as standard. The shallow-depth (15 3\/4\") medium-large insert in the Osburn line — fits openings the deeper Inspire 2000-I won't.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of a working masonry fireplace who want to convert an inefficient open hearth into a serious primary heat source — up to 2,100 sq ft of zone heating capability with a 2.4 ft³ firebox, 20-inch log capacity, and an 8-hour maximum burn cycle. Reasonable insulation, access to seasoned hardwood at 15–20% moisture, and an existing masonry fireplace that meets the minimum opening dimensions (23 3\/8\" H × 28 7\/8\" W × 15 3\/4\" D per manual) are the basic requirements.\u003c\/p\u003e\n\n\u003cp\u003eBuyers with a medium-depth masonry opening that won't take the deeper Inspire 2000-I. The 2000-I's 15 3\/4\" minimum depth is meaningfully shallower than the Inspire's 20 3\/4\" requirement — for a buyer who wants medium-large firebox capability and the masonry depth is tight, this is the right tool. The trade-off is a less powerful blower (144 CFM vs the Inspire's 176 CFM).\u003c\/p\u003e\n\n\u003cp\u003eBuyers heating 1,400–1,900 sq ft as primary winter heat in moderate climates, or 1,200–1,500 sq ft in cold climates and older homes. The 2000-I sits in the upper-middle of the Osburn insert line — meaningfully more firebox than the 1700-I, with a different aesthetic and depth profile from the larger 3500-I or Matrix 2700.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want the traditional Osburn aesthetic with configurable trim. The cast-iron arched door, glass viewing window, and selectable faceplate trim (Black or Brushed Nickel) plus optional steel door overlay give the front face real detail — not as decorative as the Matrix line, not as minimal as the Inspire. The 2000-I is the most-configurable insert in the Osburn line on the front face.\u003c\/p\u003e\n\n\u003cp\u003eBuyers with a high mantel or large surround. The 2000-I's 9\" minimum side-mantel and 27\" top-mantel clearances are tighter than the smaller 1700-I, which means it can sit closer to a tall combustible mantel than smaller siblings. Verify your specific install with a certified installer before committing.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers without an existing code-compliant masonry fireplace. Wood inserts must be installed inside a lined masonry fireplace with a continuous stainless-steel chimney liner running the full height. This insert requires a substantial opening (23 3\/8\" H × 28 7\/8\" W × 15 3\/4\" D per manual). Not approved for factory-built (prefab) metal fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers who want the most powerful blower in the line. The 2000-I uses the 144 CFM blower shared with the 1700-I and 3500-I — not the 176 CFM unit found in the Matrix 2700 and Inspire 2000-I. For maximum heat-into-the-room performance, those models will move more air.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers heating under 1,200 sq ft. The 2.4 ft³ firebox will overheat a smaller space and force you to run it inefficiently. For smaller spaces, step down to the Osburn 1700-I.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. The 8-hour manufacturer maximum is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 6–7 hours. For longer burns, consider a catalytic insert.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers who want a modern, picture-window aesthetic. The 2000-I is intentionally traditional — cast-iron arched door, framed glass, configurable cast-iron faceplate. Buyers wanting the flush, contemporary look should compare against the Inspire 2000-I.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat insert but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 ft³ overall \/ 1.95 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Medium-large firebox sized for primary zone heating across 500–2,100 sq ft. The overall figure includes a buffer zone above the EPA loading line; the 1.95 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,200–44,500 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around — from a steady low burn at the bottom up through strong sustained output in the upper end.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,400–1,900 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e72% HHV \/ 77% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e79% optimum overall efficiency at low burn rate; 76% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.3 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer's published spec table. EPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The 2000-I is compliant with the federal cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e4-inch margin over the recommended length — meaningful for buyers with access to longer-cut firewood. Logs load across the width of the firebox, sides visible from the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with a cast-iron arched door frame and configurable cast-iron faceplate. 3\/16\" body, 5\/16\" top. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFaceplate\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eRegular or Large\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTwo configurable sizes at order: Regular (29\" × 44\") or Large (32\" × 50\"). Each can be ordered with optional Black or Brushed Nickel faceplate trim packages. Plus an optional Black or Brushed Nickel steel door overlay across the front of the door — the most configurable front-face of any insert in the Osburn line.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/8\" × 10 1\/4\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCeramic glass viewing window with air-wash. Replacement glass must be the same ceramic specification — tempered or ordinary glass will not withstand the operating temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, 144 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePremium-quality variable-speed blower with rheostat speed control and thermodisc auto-on. Same blower as the smaller 1700-I and the larger 3500-I — distinct from the 176 CFM unit in the Matrix 2700 and Inspire 2000-I.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Liner must conform to UL 1777 (USA), CAN\/ULC-S635, or CAN\/ULC-S640 (Canada). Per manual, minimum chimney height 12 feet. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21\" W × 16 3\/4\" D × 11 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Designed for east-west loading across the width of the firebox.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/2\" W × 9\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eHorizontal loading door opening. Accommodates 20-inch logs loaded east-west with margin.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e28 3\/8\" W × 26 3\/8\" D × 23 1\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions before the faceplate. Final installed width depends on the faceplate configuration chosen at order.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e23 3\/8\" H × 28 7\/8\" W × 15 3\/4\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. The 15 3\/4\" minimum depth is notably shallower than the Inspire 2000-I (20 3\/4\") and the Matrix 2700 (22 1\/8\") — the 2000-I fits medium-depth masonry openings the larger inserts can't.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e432 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling — three-person minimum is reasonable for this weight class. Remove loose internal components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNot certified for mobile-home installation under any configuration.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 2000-I is approved only for installation inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. It is not approved for installation in factory-built (prefab) metal fireplaces, in mobile or manufactured homes, in alcoves, or as a freestanding unit. The masonry fireplace and chimney must be inspected before installation for cracks, loose mortar, creosote, blockage, or other signs of deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e23 3\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e28 7\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e15 3\/4\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the minimum width. Plan for a small installation margin above the insert to seat the liner adapter — an opening exactly at the minimum will be a tight install. Measure carefully before ordering. The 15 3\/4\" minimum depth is the 2000-I's positioning advantage over the deeper-required inserts in the Osburn line.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\u003cp\u003eThe 2000-I requires one faceplate size selection at order, with optional trim and door-overlay configurations:\u003c\/p\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eConfiguration\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eSize\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRegular faceplate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e29\" × 44\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eLarge faceplate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e32\" × 50\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eEach faceplate size can be ordered with an optional Black or Brushed Nickel trim package (matching faceplate dimensions) — this is the configurable decorative frame that sits around the appliance face. Plus an optional Black or Brushed Nickel steel door overlay across the door. All configurable selections are made at order and are not field-swappable. Choose the configuration that matches the masonry opening and the look you want. For larger openings beyond the Large faceplate's 32\" × 50\" coverage, an optional 32\" × 50\" cuttable faceplate (SBI AC01357, 18 GA) extends the cover area — the cuttable can be trimmed to contour an arched fireplace or to minimize visible flashing, ordered as a separate accessory.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAdjacent combustible side wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible side mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e9\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible top mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop of insert to combustible shelf\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform \/ floor protection to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe certification label on the back of the insert always overrides clearance figures published elsewhere. An optional heat shield (SBI AC01317, 7 3\/16\" × 26\") is available for surround\/shelf applications where additional protection is needed.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFloor protection requirements depend on whether the existing masonry hearth is raised above the surrounding combustible floor and whether it extends sufficiently in front of the appliance. The manual requires a non-combustible floor protector extending at least 16 inches in front of the unit in the USA or 18 inches in Canada, measured from the door opening. If the masonry hearth is level with or only slightly raised above the surrounding combustible floor, an R-value floor protector may be required per the manual's floor-protection worksheet. The manual includes a thermal-resistance lookup table for common floor protection materials (brick, cement board, ceramic tile, marble) to calculate the required R-value combination. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation. Final hearth protection must be calculated from the manual's floor-protection worksheet and approved by the installer\/AHJ.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe 2000-I requires a continuous 6-inch stainless-steel chimney liner extending from the insert flue collar to the top of the chimney. The liner must conform to ULC S635, CAN\/ULC-S640 (Canada) or UL 1777 (USA) and be rated for solid fuel. The minimum liner height is 12 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eThe 2000-I performs best with a 6-inch stainless-steel chimney liner. In the USA, use a 6-inch liner listed to UL 1777. In Canada only, connection to a chimney liner of at least 5 inches may be permitted if it properly vents combustion gases, the total masonry chimney height is greater than 20 feet, and the application is verified and authorized by a qualified installer. The insert is not approved for a positive flue connection to clay tile — a continuous stainless liner is required.\u003c\/p\u003e\n\n\u003cp\u003eIf the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed. A sheet-metal block-off plate sealed at the damper level (or, in Canada per CSA B365, mineral wool packing around the liner) is recommended at the throat to reduce cold-air backdraft and to allow the insert to deliver rated performance — without it, jacket-recovered heat is lost into the smoke chamber. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional 5-inch fresh-air intake kit is available for code jurisdictions requiring outside combustion air or for tight new-construction homes with mechanical ventilation. In conventional homes the manual identifies room air as the safest and most reliable supply for combustion; almost all houses have enough natural leakage to provide what the insert needs. A smoke detector and carbon monoxide detector are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 2000-I wood insert (OB02016) with welded carbon-steel firebox and cast-iron arched glazed door\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required faceplate selection (Regular 29\" × 44\" or Large 32\" × 50\") — see \"Where it can go\" for the options\u003c\/li\u003e\n\u003cli\u003e144 CFM premium-quality variable-speed blower with rheostat speed control and thermodisc auto-on\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eMoulded refractory bricks lining\u003c\/li\u003e\n\u003cli\u003eAdjustable threaded legs\u003c\/li\u003e\n\u003cli\u003eRemovable air-control handle\u003c\/li\u003e\n\u003cli\u003eLiner fixation brackets and hardware\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, extending at least 16 inches in front of the unit in the USA, 18 inches in Canada\u003c\/li\u003e\n\u003cli\u003eSheet-metal block-off plate, high-temp silicone, and mineral wool insulation — effectively required in practice for the insert to deliver rated performance\u003c\/li\u003e\n\u003cli\u003eOptional faceplate trim package in Black or Brushed Nickel — configured at order to match the chosen faceplate size\u003c\/li\u003e\n\u003cli\u003eOptional steel door overlay in Black or Brushed Nickel — configured at order\u003c\/li\u003e\n\u003cli\u003eOptional 32\" × 50\" cuttable faceplate, 18 GA (SBI AC01357) — for masonry openings larger than the Large faceplate covers\u003c\/li\u003e\n\u003cli\u003eOptional 7 3\/16\" × 26\" heat shield for surround\/shelf (SBI AC01317) — for installations requiring additional surround protection\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for code jurisdictions requiring outside combustion air or for tight new-construction homes\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch × 4' insulated flex pipe for fresh-air intake (SBI AC02090) — HVAC type, ULC S110 or UL 181 class 0 or class 1\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper (SBI AC01349) — do not close while in use\u003c\/li\u003e\n\u003cli\u003eOptional rigid firescreen (SBI AC01315) — for occasional attended fire viewing only where permitted by local code and only when used exactly as instructed in the fire screen manual; never leave the insert unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional liner hook-up system (SBI AC02006) — simplifies liner-to-flue-collar connection\u003c\/li\u003e\n\u003cli\u003eOptional offset liner adapter (SBI AC01214) — for installations where the chimney throat geometry requires offset connection\u003c\/li\u003e\n\u003cli\u003eOptional tempered glass hearth pad 10mm 18\" × 50\" (SBI AC02760)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal operation. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 14,200–44,500 BTU\/hr band per the CSA B415.1-10 stack-loss method — a wide range covering shoulder-season heating on the low end and strong sustained output for cold-snap heating on the high end.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a 45-minute warm-up, 2–3 hours of strong sustained heat once the firebox and surrounding masonry come up to temperature, then a gradual decline over the next 3–4 hours with a coal bed remaining. Total useful heat from one full pack is realistically 6–7 hours, occasionally approaching the 8-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed. Owner reports describe successful heating across 1,800–2,400 sq ft homes, with the highest-end results typically requiring well-insulated, open-plan layouts.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. This is one of the underappreciated benefits of an insert versus a freestanding stove — the masonry stores and releases heat on its own cycle. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe 144 CFM variable-speed blower is what gets the heat into the room. Because most of the insert's firebox sits inside the masonry cavity, the radiant heat that would otherwise reach the room from a freestanding stove is partly absorbed by the surrounding brick. The convection jacket around the firebox captures that heat and the blower pushes it out into the room. The rheostat allows speed adjustment, and the thermodisc handles automatic on\/off based on insert temperature. The 144 CFM rating is the same blower used in the smaller 1700-I and the larger 3500-I — meaningfully quieter at typical settings than the 176 CFM unit in the Matrix 2700 and Inspire 2000-I, but with less peak airflow.\u003c\/p\u003e\n\n\u003cp\u003eMultiple owner reports cite occasional thermodisc activation issues — the blower failing to engage in AUTO when the insert reaches operating temperature, or running constantly regardless of switch position. The issue is usually improper thermodisc seating against the insert body during installation; have the installer verify the sensor mounting before sign-off and test all switch positions before the installer leaves.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic inserts, not specific to Osburn. The 17 1\/8\" × 10 1\/4\" glass is sized in proportion to the firebox — narrower than the Matrix 2700's wide-format glass, taller than the Inspire's horizontal picture window.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eLess powerful blower than newer Osburn inserts.\u003c\/strong\u003e The 2000-I uses the 144 CFM blower shared with the 1700-I and 3500-I — not the 176 CFM unit in the Matrix 2700 and Inspire 2000-I. For an insert where most of the firebox sits inside the masonry cavity, blower CFM is what gets the heat into the room. The 144 CFM unit is quieter at typical settings but moves less air. If maximum heat delivery is the priority, the Matrix 2700 (deeper masonry opening) or Inspire 2000-I (deeper masonry opening) deliver more.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShallow-depth advantage.\u003c\/strong\u003e The 15 3\/4\" minimum depth is meaningfully shallower than the Inspire 2000-I (20 3\/4\") and the Matrix 2700 (22 1\/8\") — the 2000-I fits medium-depth masonry openings the deeper-required inserts can't. For buyers with a shallow-but-wide existing fireplace, this is the most-likely-to-fit medium-large insert in the Osburn line.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSubstantial masonry opening required overall.\u003c\/strong\u003e The 23 3\/8\" H × 28 7\/8\" W footprint is still a real requirement — narrower fireplaces won't accept it. Measure carefully before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMultiple owner reports of blower thermodisc issues.\u003c\/strong\u003e Some owners report the blower failing to engage automatically or running constantly regardless of switch position. The issue is typically improper thermodisc seating during installation. Have the installer verify the sensor mounting before sign-off and test all switch positions before they leave.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEmissions at the upper end of EPA compliance.\u003c\/strong\u003e The 2.3 g\/hr particulate emissions rate is well within the EPA 2020 cordwood limit (2.5 g\/hr) but higher than the 1.2 g\/hr Matrix 2700 or the 1.5 g\/hr Matrix 1900. In EPA non-attainment counties or jurisdictions with stricter local emission rules, this is worth comparing against the Matrix line.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e8-hour maximum burn is large-class, not long-burn class.\u003c\/strong\u003e A 2.4 ft³ non-cat insert gives you meaningful primary-heat capability across 1,400–1,900 sq ft, with realistic 6–7 hour burn cycles. If you want true 10+ hour overnight burns, consider a catalytic insert with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 2,100 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across medium-large inserts is buying for the high end of the manufacturer's heating range. Several 2000-I owners successfully heat 1,800–2,400 sq ft homes, but those results require well-insulated, open-plan layouts; supplemental heat may still be needed in the coldest weather.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe blower is essential, not optional.\u003c\/strong\u003e Unlike a freestanding stove where the blower meaningfully improves heat distribution, on an insert the blower is what gets the heat into the room at all. Most of the firebox sits inside the masonry cavity, which absorbs radiant heat. The insert will run safely without the blower (useful in a power outage), but day-to-day heat into the room depends on the blower being on and working.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e432 lb shipping weight is heavy.\u003c\/strong\u003e Plan for three-person handling minimum and verify the installation route — stairs, narrow doorways, and tight masonry access make the install meaningfully harder than for smaller inserts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLiner, block-off plate, and labor are not in the appliance price.\u003c\/strong\u003e The insert is the appliance; the chimney liner, the block-off plate, the insulation wrap, and the professional installation are separate purchases that need to be planned for. Older or taller chimneys, offset flues, and damper-frame removal add to install complexity. Skipping the liner, the block-off plate, or the insulation wrap saves money up front and costs measurable performance and creosote durability after.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration is a one-time decision.\u003c\/strong\u003e Faceplate size (Regular or Large), trim package (Black or Brushed Nickel), and steel door overlay (Black or Brushed Nickel) are all configured at order — not field-swappable. Choose carefully based on the masonry opening and the look you want.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShipping damage shows up in reviews.\u003c\/strong\u003e Multiple owner reports cite broken trim, scratches, or wrong-size overlays on arrival. SBI's parts network handles replacements but the experience can be frustrating. Inspect the shipment thoroughly on delivery before signing off — document any damage with photos before the installer leaves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in. Run the insert hot and expect the smell to disappear permanently after the cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e Per the manual, the recommended method is the EPA loading procedure for cleanest combustion: place two small pieces in the bottom in a reverse-V shape, two medium-size pieces in an east-west orientation in the back over the reverse V, and a big piece in the front over the reverse V. Leave air space between pieces. Light, leave the door slightly ajar for about 5 minutes during light-off; close once the fire is well established. The manual also describes alternative methods (conventional bottom-up, top-down, two-parallel-logs).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located below the ash shelf. Push the handle to one position for HIGH (full air) and the opposite position for LOW (minimal air). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. Closing too fast and the fire smolders. A flue thermometer is strongly recommended; without one, you are guessing at draft, burn rate, and overfire risk.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower operation.\u003c\/strong\u003e The 144 CFM variable-speed blower has a rheostat for speed adjustment plus a thermodisc-controlled AUTO mode that starts the blower when the insert reaches operating temperature and stops it when it cools down. Set the rheostat and the sensor handles the rest. Allow the insert to reach operating temperature (approximately one hour from cold start) before relying on the blower. Per the manual, turning the blower on too early during start-up pulls heat away from the firebox and slows the build-up to clean combustion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–4 hours between reloads in active heating use; up to 7 hours for a final overnight pack with the air shut hard. Rake remaining charcoal toward the front of the firebox before loading — this concentrates the coals near where most of the combustion air enters and helps ignite the new load. Place the new load on and at the back of the embers. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load, close the door, and run the air open until the load is fully engaged before reducing gradually. Turn the blower OFF before opening the door fully to reduce ash disturbance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCarbon monoxide watch.\u003c\/strong\u003e Per the manual, if the firebox no longer shows flame but still contains unburned logs, check outside for smoke from the chimney. Smoke without flame means the fire is air-starved and CO levels are rising. Open the door slightly, move the logs with a poker, create a passage for air by making a trench in the ember bed, and add small kindling-size pieces to restart combustion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The 2000-I uses a hollow-bottom firebox; ash is scooped manually from the front. Empty ash every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days and releases carbon monoxide. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door. The latch mechanism is adjustable — remove the split pin with pliers and turn the handle one counterclockwise turn to increase pressure. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney and liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the manual specifically calls for lubrication. If the blower fails to engage automatically when the insert reaches operating temperature, have the installer or dealer inspect the thermodisc mounting and contact with the insert body — improper seating is the most common cause of auto-activation issues on this insert. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefractory bricks and baffle.\u003c\/strong\u003e The intense heat of the fire can cause slight cracks in the refractory bricks — minor cracks do not reduce effectiveness. Inspect periodically and replace any wider cracks. The baffle and secondary tubes can be removed for sweep access and inspection. Operation with a cracked or missing baffle may cause unsafe temperatures and voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChimney fire response.\u003c\/strong\u003e If a chimney fire occurs: close the insert door and the air-intake control, alert occupants, contact the fire department if assistance is needed, use a dry chemical fire extinguisher or baking soda or sand to control the fire (never water — it causes a dangerous steam explosion), and do not use the appliance again until the insert and chimney have been inspected by a qualified chimney sweep or fire-department inspector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney. Do not burn compressed logs made of wax-impregnated sawdust or logs with chemical additives; 100% compressed-sawdust logs can be used with caution.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRemovable carbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Inspire 2000-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame firebox class — 2.4 ft³, same 75,000 BTU\/hr maximum, same 14,200–44,500 BTU\/hr tested range, same 500–2,100 sq ft heating range, same 72% HHV efficiency, same 2.3 g\/hr emissions, same 8-hour burn time, same 20-inch log capacity. Two key differences: blower (Inspire 176 CFM vs 2000-I 144 CFM) and aesthetic (Inspire modern flush picture-window vs 2000-I traditional cast-iron with configurable trims). The 2000-I requires meaningfully less masonry depth (15 3\/4\" vs Inspire's 20 3\/4\"). Choose the 2000-I for shallower masonry openings and traditional configurable aesthetic; choose the Inspire for deeper openings, more powerful blower, modern picture-window aesthetic, and the optional NightFlame glass.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-down sibling in the Osburn insert line. Smaller 1.86 ft³ firebox, 65,000 BTU\/hr maximum, 500–1,800 sq ft heating range, 18-inch log capacity, 7-hour maximum burn, same 144 CFM blower, 68% HHV efficiency, 1.7 g\/hr emissions. Smaller masonry opening required (21 1\/2\" × 27 1\/2\" × 12 7\/8\") — fits even shallower openings the 2000-I won't. Choose the 1700-I for smallest masonry openings and smaller spaces; choose the 2000-I for larger firebox, longer log capacity, and slightly higher published efficiency.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 3500-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-up sibling in the Osburn insert line. Larger 3.5 ft³ firebox, 110,000 BTU\/hr maximum, 1,000–2,700 sq ft heating range, 22-inch log capacity, 10-hour maximum burn, 71% HHV efficiency, 1.6 g\/hr emissions, same 144 CFM blower. Loads over both width and depth (the deepest firebox in the Osburn insert line at 20 1\/8\"). Larger minimum masonry width (31\") but similar depth requirement. Choose the 3500-I for primary heat above 2,000 sq ft, longer log capacity, north-south loading flexibility, and longer burn cycles; choose the 2000-I for shallower masonry depth and lower BTU output appropriate for 1,500–2,000 sq ft spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Super LE Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand competitor in the same size class. Comparable firebox volume and heating capacity, Pacific Energy's well-regarded sealed-firebox technology with single-lever non-cat operation, premium build, higher price. The most common cross-shop with the 2000-I for buyers weighing premium Pacific Energy fit-and-finish against the SBI dealer\/parts accessibility and the Osburn price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe 2000-I is the configurable, shallow-depth medium-large insert in the Osburn line — same 2.4 ft³ firebox class as the Inspire 2000-I, but fits openings the Inspire's 20 3\/4\" depth requirement won't take. Traditional cast-iron front face with the most-configurable trim package in the line: faceplate size, trim color, door overlay color. If the masonry opening is medium-depth and the traditional aesthetic fits the room, this is the right one.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Black","offer_id":49276828811457,"sku":"OB02016+OA10237+AC03410+OA10122","price":3539.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Brushed Nickel","offer_id":49276828876993,"sku":"OB02016+OA10237+AC03410+OA10123","price":3539.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large Black","offer_id":49276829204673,"sku":"OB02016+OA10237+AC03411+OA10128","price":3589.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large Brushed Nickel","offer_id":49276829270209,"sku":"OB02016+OA10237+AC03411+OA10129","price":3589.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Black","offer_id":49276828844225,"sku":"OB02016+OA10238+AC03410+OA10122","price":3759.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Brushed Nickel","offer_id":49276828909761,"sku":"OB02016+OA10238+AC03410+OA10123","price":3759.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Large Black","offer_id":49276829237441,"sku":"OB02016+OA10238+AC03411+OA10128","price":3809.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Large Brushed Nickel","offer_id":49276829302977,"sku":"OB02016+OA10238+AC03411+OA10129","price":3809.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-2000-i-wood-insert-front-OB02016_45143edc-e732-4da7-907b-71b36deb5976.webp?v=1748281584"},{"product_id":"osburn-inspire-2000-i-wood-insert","title":"Osburn Inspire 2000-I Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 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grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; 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line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.4 ft³ non-catalytic medium-large wood insert built around a wide-format 20 1\/4\" × 9 1\/2\" picture-window ceramic glass with a clean, modern flush-mount profile — no cast-iron decorative faceplate, no louvers, no columns. EPA 2020 cordwood certified at 2.3 g\/hr particulate emissions, 72% HHV efficiency, 75,000 BTU\/hr maximum output, 20-inch maximum east-west log capacity, up to 8-hour maximum burn time, and a powerful 176 CFM heat-activated blower included as standard. Three configurable faceplate options at order: a 32\" × 50\" cuttable, a 30\" × 25 1\/8\" U-shape narrow, or a 30\" × 26 7\/8\" 4-sided narrow. Optional NightFlame semi-transparent ceramic glass conceals the firebox when the fire is out.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of a working masonry fireplace with a medium-to-large opening who want to convert an inefficient open hearth into a serious primary heat source — up to 2,100 sq ft of zone heating capability with a 2.4 ft³ firebox, 20-inch log capacity, and an 8-hour maximum burn cycle. Reasonable insulation, access to seasoned hardwood at 15–20% moisture, and an existing masonry fireplace that meets the minimum opening dimensions (24 5\/8\" H × 29\" W × 20 3\/4\" D per manual) are the basic requirements.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want the modern, minimal, picture-window aesthetic — clean horizontal lines, large flush ceramic glass, no cast-iron decorative faceplate. The Inspire is the contemporary-design option in the Osburn insert lineup, designed to let the fire be the visual focus rather than the faceplate.\u003c\/p\u003e\n\n\u003cp\u003eBuyers heating 1,400–1,900 sq ft as primary winter heat in moderate climates, or 1,200–1,500 sq ft in cold climates and older homes. The Inspire's 2.4 ft³ firebox sits between the smaller 1700-I and the larger Matrix 2700 in firebox capacity, with the most powerful blower in the line shared with the Matrix 2700 (176 CFM).\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want the option of NightFlame ceramic glass (sold separately). The optional ROBAX semi-transparent black glass conceals the interior of the firebox when not in use — the insert reads as a clean dark panel against the masonry. When a fire is burning, the glass becomes clear and the flames show through normally. A meaningful design upgrade for buyers who want the insert to disappear visually when not in use.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want the most powerful blower in the Osburn insert line. The 176 CFM heat-activated double-cage blower meaningfully outperforms the 144 CFM blowers used in the smaller and larger Osburn inserts. For an insert — where most of the firebox sits inside the masonry cavity — blower CFM is what gets the heat into the room.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers without an existing code-compliant masonry fireplace with a substantial opening. Wood inserts must be installed inside a lined masonry fireplace with a continuous stainless-steel chimney liner running the full height. This insert requires a 20 3\/4\" minimum depth — meaningfully deeper than smaller inserts and the most common reason this insert does not fit a shallower hearth. Not approved for factory-built (prefab) metal fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers who want a traditional cast-iron faceplate aesthetic. The Inspire is intentionally modern — no decorative louvers, no framing columns, no cast-iron detailing. Buyers wanting traditional styling should look at the Osburn Matrix 1900, Matrix 2700, or 3500-I.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers heating under 1,200 sq ft. The 2.4 ft³ firebox will overheat a smaller space and force you to run it inefficiently. For smaller spaces, step down to the Osburn 1700-I or Matrix 1900.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. The 8-hour manufacturer maximum is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 6–7 hours. For longer burns, consider a catalytic insert.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat insert but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 ft³ overall \/ 1.95 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Medium-large firebox sized for primary zone heating across 500–2,100 sq ft. The overall figure includes a buffer zone above the EPA loading line; the 1.95 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,200–44,500 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around — from a steady low burn at the bottom up through strong sustained output in the upper end.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,400–1,900 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e72% HHV \/ 77% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e79% optimum overall efficiency at low burn rate; 76% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.3 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer's published spec table. EPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The Inspire is compliant with the federal cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e4-inch margin over the recommended length — meaningful for buyers with access to longer-cut firewood. Logs load across the width of the firebox, sides visible from the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, steel door frame\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with a single glass door in a steel frame. 3\/16\" body, 3\/8\" top — the heaviest top plate in the Osburn insert line. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAesthetic\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eModern flush, picture-window\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNo cast-iron decorative faceplate, no patterned louvers, no framing columns. The Inspire is the contemporary-design option in the Osburn insert line, designed to let the fire be the visual focus.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 1\/4\" × 9 1\/2\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWide-format horizontal ceramic glass with air-wash. Replacement glass must be the same ceramic specification — tempered or ordinary glass will not withstand the operating temperatures. Optional NightFlame semi-transparent black ceramic glass (SBI AC02775) available — conceals the firebox interior when fire is out.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, up to 176 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Powerful double-cage heat-activated blower with thermodisc auto-on. The most powerful blower in the Osburn insert line, shared with the Matrix 2700. Multiple owner reports note the blower is loud at higher settings — a recurring observation across this platform.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Liner must conform to UL 1777 (USA), CAN\/ULC-S635, or CAN\/ULC-S640 (Canada). Per manual, minimum chimney height 12 feet. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21\" W × 16 3\/4\" D × 11 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Designed for east-west loading across the width of the firebox.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20\" W × 8 1\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWide horizontal loading door opening — accommodates 20-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e28 1\/2\" W × 20 7\/8\" D × 24 3\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions before the faceplate. Final installed width depends on the faceplate configuration chosen at order.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e24 5\/8\" H × 29\" W × 20 3\/4\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Substantial opening required — measure carefully before ordering. The 20 3\/4\" minimum depth is deeper than most older or smaller fireplaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e435 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling — three-person minimum is reasonable for this weight class. Remove loose internal components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNot certified for mobile-home installation under any configuration.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Inspire 2000-I is approved only for installation inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. It is not approved for installation in factory-built (prefab) metal fireplaces, in mobile or manufactured homes, in alcoves, or as a freestanding unit. The masonry fireplace and chimney must be inspected before installation for cracks, loose mortar, creosote, blockage, or other signs of deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e24 5\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e29\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e20 3\/4\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the minimum width. Plan for a small installation margin above the insert to seat the liner adapter — an opening exactly at the minimum will be a tight install. Measure carefully before ordering. The 20 3\/4\" minimum depth is meaningfully deeper than smaller Osburn inserts and is the most common reason this insert does not fit a shallower hearth.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\u003cp\u003eThe Inspire 2000-I requires one faceplate selection at order. Three options are available — buyer picks one to complete the unit:\u003c\/p\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eConfiguration\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eSize\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCuttable faceplate (16 GA)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e32\" × 50\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eNarrow faceplate (U-shape, 3-sided)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e30\" × 25 1\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eNarrow faceplate (4-sided)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e30\" × 26 7\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe 32\" × 50\" cuttable faceplate is the broadest-coverage option — 16-gauge steel, edges can be trimmed to contour an arched fireplace or to minimize visible flashing. The two narrow faceplates are designed for tighter masonry openings where minimal trim coverage is preferred: the U-shape leaves the bottom open, the 4-sided wraps fully around the insert. Choose the configuration that matches the masonry opening and the look you want — this is a one-time decision configured at order, not field-swappable.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAdjacent combustible side wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible side mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e9\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible top mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop of insert to combustible shelf\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform \/ floor protection to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe certification label on the back of the insert always overrides clearance figures published elsewhere. Reduced clearances are not available by means of heat shields on this insert — the figures above are the binding minimums.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFloor protection requirements depend on whether the existing masonry hearth is raised above the surrounding combustible floor and whether it extends sufficiently in front of the appliance. The manual requires a non-combustible floor protector extending at least 16 inches in front of the unit in the USA or 18 inches in Canada, measured from the door opening. If the masonry hearth is level with or only slightly raised above the surrounding combustible floor, an R-value floor protector may be required per the manual's floor-protection worksheet. The manual includes a thermal-resistance lookup table for common floor protection materials (brick, cement board, ceramic tile, marble) to calculate the required R-value combination. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation. Final hearth protection must be calculated from the manual's floor-protection worksheet and approved by the installer\/AHJ.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe Inspire 2000-I requires a continuous 6-inch stainless-steel chimney liner extending from the insert flue collar to the top of the chimney. The liner must conform to ULC S635, CAN\/ULC-S640 (Canada) or UL 1777 (USA) and be rated for solid fuel. The minimum liner height is 12 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eThe Inspire 2000-I performs best with a 6-inch stainless-steel chimney liner. In the USA, use a 6-inch liner listed to UL 1777. In Canada only, connection to a chimney liner of at least 5 inches may be permitted if it properly vents combustion gases, the total masonry chimney height is greater than 20 feet, and the application is verified and authorized by a qualified installer. The insert is not approved for a positive flue connection to clay tile — a continuous stainless liner is required.\u003c\/p\u003e\n\n\u003cp\u003eIf the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed. A sheet-metal block-off plate sealed at the damper level (or, in Canada per CSA B365, mineral wool packing around the liner) is recommended at the throat to reduce cold-air backdraft and to allow the insert to deliver rated performance — without it, jacket-recovered heat is lost into the smoke chamber. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional 5-inch fresh-air intake kit is available for code jurisdictions requiring outside combustion air or for tight new-construction homes with mechanical ventilation. In conventional homes the manual identifies room air as the safest and most reliable supply for combustion; almost all houses have enough natural leakage to provide what the insert needs. A smoke detector and carbon monoxide detector are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn Inspire 2000-I wood insert (OB02045) with welded carbon-steel firebox and single glass door in steel frame\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required faceplate selection — see \"Where it can go\" for the three options\u003c\/li\u003e\n\u003cli\u003e176 CFM heat-activated double-cage blower assembly with thermodisc auto-on\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eMoulded refractory bricks lining\u003c\/li\u003e\n\u003cli\u003eRemovable air-control handle\u003c\/li\u003e\n\u003cli\u003eLiner fixation brackets and hardware\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, extending at least 16 inches in front of the unit in the USA, 18 inches in Canada\u003c\/li\u003e\n\u003cli\u003eSheet-metal block-off plate, high-temp silicone, and mineral wool insulation — effectively required in practice for the insert to deliver rated performance\u003c\/li\u003e\n\u003cli\u003eOptional NightFlame semi-transparent black ceramic glass (SBI AC02775) — conceals the firebox interior when the fire is out; becomes clear when burning\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for code jurisdictions requiring outside combustion air or for tight new-construction homes\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch × 4' insulated flex pipe for fresh-air intake (SBI AC02090) — HVAC type, ULC S110 or UL 181 class 0 or class 1\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake register with airtight damper (SBI AC01349) — do not close while in use\u003c\/li\u003e\n\u003cli\u003eOptional liner hook-up system (SBI AC02006) — simplifies liner-to-flue-collar connection\u003c\/li\u003e\n\u003cli\u003eOptional offset liner adapter (SBI AC01214) — for installations where the chimney throat geometry requires offset connection\u003c\/li\u003e\n\u003cli\u003eOptional tempered glass hearth pad 10mm 18\" × 50\" (SBI AC02760)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal operation. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 14,200–44,500 BTU\/hr band per the CSA B415.1-10 stack-loss method — a wide range covering shoulder-season heating on the low end and strong sustained output for cold-snap heating on the high end.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a 45-minute warm-up, 2–3 hours of strong sustained heat once the firebox and surrounding masonry come up to temperature, then a gradual decline over the next 3–4 hours with a coal bed remaining. Total useful heat from one full pack is realistically 6–7 hours, occasionally approaching the 8-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed. Multiple owner reports describe the insert easily heating 1,500–2,400 sq ft homes when the masonry chimney is up to temperature.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. This is one of the underappreciated benefits of an insert versus a freestanding stove — the masonry stores and releases heat on its own cycle. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe 176 CFM heat-activated double-cage blower is what gets the heat into the room. Because most of the insert's firebox sits inside the masonry cavity, the radiant heat that would otherwise reach the room from a freestanding stove is partly absorbed by the surrounding brick. The convection jacket around the firebox captures that heat and the blower pushes it out into the room. The 176 CFM rating is the strongest in the Osburn insert line — shared with the Matrix 2700. With the switch in AUTO, the blower starts automatically once the insert is hot enough and stops when it cools — set the position and forget about it. With the switch in MANUAL, the blower runs continuously regardless of insert temperature. Allow the insert to reach operating temperature (approximately one hour from a cold start) before turning the blower to MANUAL.\u003c\/p\u003e\n\n\u003cp\u003eThe Inspire's blower is the most consistent complaint across owner reports — multiple buyers describe it as loud at higher settings, with several specifically noting they don't run it at full speed because of the noise. The Inspire 2000-I does not include a rheostat for variable speed control (unlike the smaller 1700-I and Matrix 1900) — it is a single-speed blower with AUTO\/MANUAL\/OFF control only. If sound sensitivity is a concern, this is the most-cited owner caution on this model.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic inserts, not specific to Osburn. The wide-format glass — 20 1\/4\" × 9 1\/2\" — is the visual centerpiece of the Inspire, which makes glass cleanliness more visually important than on smaller inserts.\u003c\/p\u003e\n\n\u003cp\u003eThe optional NightFlame glass deserves a specific note: in the off state, the semi-transparent black ceramic conceals the firebox interior so the insert reads as a clean dark panel against the masonry. When a fire is burning, the glass becomes clear and flames show normally. A meaningful aesthetic upgrade for buyers who want the insert to disappear visually when not in use.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower noise is the dominant owner complaint.\u003c\/strong\u003e Across owner reviews, the most consistent observation is that the 176 CFM blower is loud at higher settings. Several owners explicitly state they avoid running it at full speed because of the noise. Unlike the smaller Osburn inserts with rheostat speed control, the Inspire's blower has only AUTO\/MANUAL\/OFF — no variable speed. If sound sensitivity is a concern, this is the trade-off to know going in. The blower delivers strong heat distribution, but the volume of air it moves is the trade-off for the audibility.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLarge appliance, large masonry opening required.\u003c\/strong\u003e The Inspire's minimum opening of 24 5\/8\" H × 29\" W × 20 3\/4\" D is substantial — particularly the 20 3\/4\" depth requirement, which is deeper than most older or smaller fireplaces. Measure carefully before ordering — this is the most common reason an Inspire purchase falls apart at the installation stage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eModern aesthetic, no decorative elements.\u003c\/strong\u003e The Inspire is intentionally minimal — no cast-iron faceplate, no patterned louvers, no framing columns. If you want traditional cast-iron detailing, this isn't it. The trade-off is that the fire is the visual focus, which is exactly what some buyers want.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFaceplate is a one-time decision, configured at order.\u003c\/strong\u003e Three options at the order stage: 32\" × 50\" cuttable, 30\" × 25 1\/8\" U-shape, or 30\" × 26 7\/8\" 4-sided. Once selected, not field-swappable. Choose carefully based on the masonry opening you're installing into — the cuttable option provides the broadest coverage; the narrow options for tighter openings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEfficiency is not the problem here.\u003c\/strong\u003e At 72% HHV, the Inspire is slightly higher on published HHV efficiency than the Osburn 1700-I and 3500-I. The real trade-offs are the modern aesthetic, substantial masonry-opening requirement, 2.3 g\/hr emissions, and blower noise — not efficiency.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEmissions at the upper end of EPA compliance.\u003c\/strong\u003e The 2.3 g\/hr particulate emissions rate is well within the EPA 2020 cordwood limit (2.5 g\/hr) but higher than the 1.2 g\/hr Matrix 2700 or the 1.5 g\/hr Matrix 1900. In EPA non-attainment counties or jurisdictions with stricter local emission rules, this is worth comparing against the Matrix line.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e8-hour maximum burn is large-class, not long-burn class.\u003c\/strong\u003e A 2.4 ft³ non-cat insert gives you meaningful primary-heat capability across 1,400–1,900 sq ft, with realistic 6–7 hour burn cycles. If you want true 10+ hour overnight burns, consider a catalytic insert with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 2,100 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across large inserts is buying for the high end of the manufacturer's heating range. Several Inspire owners report heating 1,500–2,400 sq ft homes successfully, but those are not universal results — depends heavily on insulation, climate, and house layout.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe blower is essential, not optional.\u003c\/strong\u003e Unlike a freestanding stove where the blower meaningfully improves heat distribution, on an insert the blower is what gets the heat into the room at all. Most of the firebox sits inside the masonry cavity, which absorbs radiant heat. The insert will run safely without the blower (useful in a power outage), but day-to-day heat into the room depends on the blower being on and working.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e435 lb shipping weight is heavy.\u003c\/strong\u003e Plan for three-person handling minimum and verify the installation route — stairs, narrow doorways, and tight masonry access make the install meaningfully harder than for smaller inserts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLiner, block-off plate, and labor are not in the appliance price.\u003c\/strong\u003e The insert is the appliance; the chimney liner, the block-off plate, the insulation wrap, and the professional installation are separate purchases that need to be planned for. Older or taller chimneys, offset flues, and damper-frame removal add to install complexity. Skipping the liner, the block-off plate, or the insulation wrap saves money up front and costs measurable performance and creosote durability after.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShipping damage shows up in reviews.\u003c\/strong\u003e Multiple owner reports cite broken bricks, broken glass, scratched legs, or missing components on arrival. SBI's parts network handles replacements but the experience can be frustrating. Inspect the shipment thoroughly on delivery before signing off — document any damage with photos before the installer leaves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNightFlame glass is a meaningful upcharge.\u003c\/strong\u003e The optional ROBAX semi-transparent ceramic glass is a real aesthetic feature, not marketing, but it adds cost. Decide whether the off-state appearance matters enough to justify the upgrade before ordering — it's a meaningful price addition.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in. Run the insert hot and expect the smell to disappear permanently after the cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e Per the manual, the recommended method is the EPA loading procedure for cleanest combustion: place two small pieces in the bottom in a reverse-V shape, two medium-size pieces in an east-west orientation in the back over the reverse V, and a big piece in the front over the reverse V. Leave air space between pieces. Light, leave the door slightly ajar for about 5 minutes during light-off; close once the fire is well established. The manual also describes alternative methods (conventional bottom-up, top-down, two-parallel-logs).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located below the ash shelf. Push the handle to one position for HIGH (full air) and the opposite position for LOW (minimal air). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. Closing too fast and the fire smolders. A flue thermometer is strongly recommended; without one, you are guessing at draft, burn rate, and overfire risk.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower switch positions.\u003c\/strong\u003e The 176 CFM blower assembly has a three-position switch: (1) AUTO — blower starts when the insert is hot enough and stops when it cools down (thermodisc-controlled); (2) OFF — blower stopped, prevented from starting automatically; (3) MANUAL — runs continuously regardless of insert temperature. Use AUTO for normal operation; use MANUAL only when you want continuous airflow regardless of temperature. Allow the insert to reach operating temperature (approximately one hour from cold start) before turning the blower to MANUAL.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–4 hours between reloads in active heating use; up to 7 hours for a final overnight pack with the air shut hard. Rake remaining charcoal toward the front of the firebox before loading — this concentrates the coals near where most of the combustion air enters and helps ignite the new load. Place the new load on and at the back of the embers. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load, close the door, and run the air open until the load is fully engaged before reducing gradually. Turn the blower OFF before opening the door fully to reduce ash disturbance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCarbon monoxide watch.\u003c\/strong\u003e Per the manual, if the firebox no longer shows flame but still contains unburned logs, check outside for smoke from the chimney. Smoke without flame means the fire is air-starved and CO levels are rising. Open the door slightly, move the logs with a poker, create a passage for air by making a trench in the ember bed, and add small kindling-size pieces to restart combustion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Inspire uses a hollow-bottom firebox; ash is scooped manually from the front. Empty ash every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days and releases carbon monoxide. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut. If running the optional NightFlame glass, the same cleaning rules apply.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door. The latch mechanism is adjustable. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney and liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefractory bricks and baffle.\u003c\/strong\u003e The intense heat of the fire can cause slight cracks in the refractory bricks — minor cracks do not reduce effectiveness. Inspect periodically and replace any wider cracks. The baffle and secondary tubes can be removed for sweep access and inspection. Operation with a cracked or missing baffle may cause unsafe temperatures and voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChimney fire response.\u003c\/strong\u003e If a chimney fire occurs: close the insert door and the air-intake control, alert occupants, contact the fire department if assistance is needed, use a dry chemical fire extinguisher or baking soda or sand to control the fire (never water — it causes a dangerous steam explosion), and do not use the appliance again until the insert and chimney have been inspected by a qualified chimney sweep or fire-department inspector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney. Do not burn compressed logs made of wax-impregnated sawdust or logs with chemical additives; 100% compressed-sawdust logs can be used with caution.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRemovable carbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Matrix 2700 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-up sibling in the Osburn insert line. Slightly larger 2.5 ft³ firebox, 80,000 BTU\/hr maximum, 750–2,200 sq ft heating range, same 20-inch log capacity, same 176 CFM blower, 64% HHV efficiency, 1.2 g\/hr emissions (class-leading among Osburn inserts), 8-hour burn time. Carries the Osburn cast-iron decorative faceplate with configurable Black or Brushed Nickel door overlay — traditional Osburn aesthetic versus the Inspire's modern minimal look. Choose the Matrix 2700 for traditional cast-iron styling and lower published emissions; choose the Inspire for modern picture-window aesthetic and the optional NightFlame glass.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-down sibling in the Osburn insert line. Smaller 1.86 ft³ firebox, 65,000 BTU\/hr maximum, 500–1,800 sq ft heating range, 18-inch log capacity, 7-hour maximum burn, 144 CFM blower (less powerful than the Inspire's 176 CFM), 68% HHV efficiency. Much smaller masonry opening required (21 1\/2\" × 27 1\/2\" × 12 7\/8\") — fits openings the Inspire won't. Choose the 1700-I for shallower masonry openings or smaller spaces; choose the Inspire for larger firebox, more powerful blower, modern aesthetic, and the NightFlame option.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 3500-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eLarger step-up in the Osburn insert line. Much larger 3.5 ft³ firebox, 110,000 BTU\/hr maximum, 1,000–2,700 sq ft heating range, 22-inch log capacity, 10-hour maximum burn, 71% HHV efficiency, 1.6 g\/hr emissions, 144 CFM blower. Smaller minimum masonry depth (18 3\/8\") but wider width requirement (31\"). Traditional aesthetic, not modern. Choose the 3500-I for primary heat above 2,000 sq ft, longer log capacity, and longer burn cycles; choose the Inspire for modern aesthetic, more powerful blower, and lower BTU output appropriate for 1,500–2,000 sq ft spaces.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eRegency CI2700 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand competitor with a modern flush-mount aesthetic similar to the Inspire. Larger viewing window, premium build quality, longer realistic burn cycles, hybrid combustion technology in some configurations. Higher price point. The most common cross-shop with the Inspire for buyers prioritizing modern aesthetic — Regency's fit-and-finish at a premium versus the SBI dealer\/parts accessibility and the Osburn price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Inspire 2000-I is the modern face of the Osburn insert line — a wide picture-window of ceramic glass set into a clean flush profile, no cast-iron decorative work, no patterned louvers. If you want the fire to be the focus and you've got the masonry opening to take it, this is the right one. The blower is loud at higher settings and the masonry opening is substantial; if those work for your install, this is a strong primary-heat insert with the best blower in the Osburn line.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Narrow 4-Sides","offer_id":49276885729473,"sku":"OB02045+AC01022","price":4489.6,"currency_code":"USD","in_stock":true},{"title":"Narrow U-Shape","offer_id":49276885696705,"sku":"OB02045+AC01020","price":4426.35,"currency_code":"USD","in_stock":true},{"title":"Cuttable Faceplate","offer_id":49276885663937,"sku":"OB02045+AC01021","price":4426.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-inspire-2000-i-wood-insert-front-ob02045.webp?v=1748289977"},{"product_id":"osburn-matrix-i-wood-insert","title":"Osburn Matrix-I Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.4 ft³ non-catalytic medium-large wood insert with a contemporary cast-iron flush-mount surround — the Osburn-tier counterpart to the Enerzone Destination 2.3 Insert. EPA 2020 cordwood certified at 2.3 g\/hr emissions and 79% optimum efficiency, with a large 19 5\/8\" × 11 7\/8\" near-square ceramic glass viewing area, 20-inch maximum east-west log capacity, up to 2,100 sq ft of heating area, 8-hour maximum burn time, 75,000 BTU\/hr maximum output, and a heat-activated 90 CFM blower included as standard.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of a working masonry fireplace who want to convert an inefficient open hearth into a serious heat source — up to 2,100 sq ft of zone heating capability with a 2.4 ft³ firebox, 20-inch log capacity, and an 8-hour maximum burn cycle. Reasonable insulation, access to seasoned hardwood at 15–20% moisture, and an existing masonry fireplace that meets the manual's minimum opening dimensions (23 3\/8\" H × 28 7\/8\" W × 19 5\/8\" D) are the basic requirements.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the Osburn brand finish with a contemporary aesthetic. The Matrix surround is a clean cast-iron flush-mount face designed to sit nearly flush with the masonry — a modern look that uses one of the largest near-square glass viewing areas in the medium-large insert class (19 5\/8\" × 11 7\/8\") as the visual focus rather than ornate decorative castings. The standard 36 1\/8\" × 25 1\/8\" cast-iron surround is included; optional backing plate kits extend the cover area for larger or older masonry openings.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a single appliance to do the work of zone heating across a main living area. The 14,200–44,500 BTU\/hr tested output band gives meaningful flexibility — from mild-weather low-output operation up to serious cold-weather heat. With the heat-activated 90 CFM blower, warm air circulates from the firebox jacket out into the room automatically once the insert is up to temperature.\u003c\/p\u003e\n\u003cp\u003eBuyers who value Canadian-built SBI quality and the lifetime warranty on the combustion-chamber welds and cast-iron door frame. The Matrix shares the same medium-large SBI insert platform as the Enerzone Destination 2.3 Insert — proven chassis, EPA 2020 cordwood certified, broadly available parts and dealer support across North America.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers without an existing code-compliant masonry fireplace. Wood inserts must be installed inside a lined masonry fireplace with a continuous stainless-steel chimney liner running the full height. This insert is not approved for factory-built (prefab) metal fireplaces, mobile homes, or any installation outside a masonry hearth.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. The 8-hour manufacturer maximum is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 6–7 hours. For longer burns, step up to a 3.0+ ft³ insert or to a catalytic insert with a real low-output mode.\u003c\/p\u003e\n\u003cp\u003eNot for buyers wanting traditional decorative cast-iron styling. The Matrix surround is intentionally clean and modern. Buyers wanting heavy traditional castings, louvered faceplates, or ornate visible-grille styling should look at the Enerzone Solution 2.3-I (traditional faceplate option) or premium-tier alternatives.\u003c\/p\u003e\n\u003cp\u003eNot for buyers sensitive to blower noise. The 90 CFM blower is single-speed (no rheostat or variable-speed control) with a thermodisc heat sensor for AUTO operation. Owner reviews consistently flag the blower as louder than expected for this class of insert. AUTO mode reduces run time but does not change the volume when it's running.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat stove but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.4 ft³ overall \/ 1.95 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Medium-large firebox sized for zone heating across 500–2,100 sq ft. EPA loading volume is the usable space respecting air-wash and ash-spillage buffers.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e75,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e14,200–44,500 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. Wide operating band from mild-weather low output to serious cold-weather heat.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,100 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,200–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e72% HHV \/ 77% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e79% optimum overall efficiency at a specific burn rate; 76% optimum heat-transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.3 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified (limit is 2.5 g\/hr). Tested per EPA \/ CSA B415.1-10 by an independent accredited laboratory.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLogs load across the width of the firebox, sides visible from the door. Recommended log length is 16 inches east-west; most firewood suppliers cut to 16 inches as standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron surround\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox (body 3\/16\", top 5\/16\") with a contemporary cast-iron flush-mount surround and cast-iron door frame. Lifetime warranty on the combustion-chamber welds and cast-iron door frame.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandard surround\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e36 1\/8\" × 25 1\/8\", included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eFour-piece cast-iron flush-mount face (top, left, right, bottom) included with the insert. For larger masonry openings, optional 29\" × 44\" or 29\" × 50\" backing plate kits extend the cover area.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e19 5\/8\" × 11 7\/8\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNear-square ceramic glass with air-wash, 5\/32\" (4 mm) thick, tested to 1,400 °F per manual. Replacement glass must be a ceramic with the same specification — tempered or ordinary glass will not withstand the operating temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, up to 90 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Single-speed tangential blower with three-position switch: AUTO (heat-sensor-controlled, starts when insert is hot and stops when cool), MANUAL (continuous), or OFF. No variable-speed control. Owner reviews consistently flag the blower as louder than expected.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e21\" W × 16 3\/4\" D × 11 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manual. Wider than deep; the 16 3\/4\" depth accepts N-S loading for packed cold-weather cycles in addition to the default E-W loading.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/2\" W × 8 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening. The wide door accommodates 20-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e36 1\/8\" W × 23 1\/8\" D × 25 1\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInsert exterior dimensions per manual. Confirm fireplace can accommodate before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e23 3\/8\" H × 28 7\/8\" W × 19 5\/8\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Confirm fireplace dimensions before ordering. Backing plates can extend coverage for larger openings; the optional projection kit (2\" or 4\") can extend the insert outward when fireplace depth is insufficient.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e491 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for professional installation — this is heavy work in a confined space.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Matrix Insert is approved only for installation inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. It is not approved for installation in factory-built (prefab) metal fireplaces, in mobile or manufactured homes, in alcoves, or as a freestanding unit. The masonry fireplace and chimney must be inspected before installation for cracks, loose mortar, creosote, blockage, or other signs of deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e23 3\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e28 7\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e19 5\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the width. Plan for a small installation margin above the insert to seat the liner adapter — an opening exactly at the minimum will be a tight install. Measure carefully before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eProjection kit (optional)\u003c\/h3\u003e\n\u003cp\u003eIf the fireplace depth is less than the minimum 19 5\/8\", the optional projection kit (SBI AC01323) extends the insert 2 or 4 inches forward of the fireplace facing. With the kit installed, the depth requirement reduces to 17 5\/8\" (2\" projection) or 15 5\/8\" (4\" projection). The projection kit requires one of the optional faceplate backing plate kits to secure to it. Ordered as a separate accessory.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eConfiguration\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eSize\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eStandard cast-iron surround (included)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e36 1\/8\" × 25 1\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate backing plate kit (optional)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e29\" × 44\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate backing plate kit (optional)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e29\" × 50\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe standard four-piece cast-iron flush-mount surround ships with the insert and covers most modern masonry openings. For larger or older openings, choose the backing plate kit (29\" × 44\" or 29\" × 50\") that matches the masonry opening — installs to the back of the standard surround to extend the cover area. Backing plate kits are ordered as separate accessories.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side wall to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side mantle to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e9\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible top mantle to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible mantel shelf above insert (max 12\" deep)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFloor protection in front of unit (USA)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFloor protection in front of unit (Canada)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e18\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA combustible mantel shelf with a maximum depth of 12 inches may be installed at a height of at least 27 inches above the insert. At greater heights the shelf must still observe the 12-inch maximum depth. The certification label affixed to the insert (located underneath, behind the blower) always overrides clearance figures published in any other media.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFloor protection requirements depend on whether the existing masonry hearth is raised 5 inches or more above the surrounding combustible floor. If the hearth is raised 5 inches or more, a non-combustible floor protector with no R-value is required and must extend at least 16 inches in front of the unit in the USA, 18 inches in Canada. If the hearth is raised less than 5 inches, a non-combustible floor protector with an R-value of at least 1.00 is required and must extend at least 23 inches in front of the unit. The manual includes a thermal-resistance lookup table for common floor protection materials (brick, cement board, ceramic tile, marble, etc.) to calculate the required R-value combination.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe Matrix Insert performs best with a 6-inch stainless-steel chimney liner. In the USA, use a 6-inch liner listed to UL 1777. In Canada only, connection to a chimney liner of at least 5 inches may be permitted if it properly vents combustion gases, the total masonry chimney height is greater than 20 feet, and the application is verified and authorized by a qualified installer. The insert is not approved for a positive flue connection to clay tile — a continuous stainless liner is required.\u003c\/p\u003e\n\n\u003cp\u003eThe minimum chimney height is 12 feet, subject to installer verification, certification label, draft conditions, and local code. The manual also states that the total system height (from the floor the appliance sits on to the top of the chimney) should never be less than 15 feet for reliable draft. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eIf the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed and a notice plate (#27009, supplied with the owner's manual kit) must be installed inside the masonry hearth in a visible place. A sheet-metal block-off plate sealed at the damper level (or, in Canada per CSA B365, mineral wool packing around the liner) is effectively required in practice to reduce cold-air backdraft and to allow the insert to deliver rated performance — without it, jacket-recovered heat is lost into the smoke chamber. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003cp\u003eThe manual strongly recommends an interior chimney rising straight up through the tallest part of the house. Outside chimneys lead to cold backdrafting when there is no fire, slow kindling of new fires, and smoke roll-out when the door is opened for loading.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eThe manual identifies room air as the safest and most reliable supply of combustion air for this insert — almost all houses have enough natural leakage to provide what the insert needs. An optional 5-inch fresh-air intake kit is available for tight new-construction homes, for code jurisdictions requiring outside combustion air, or where powerful kitchen-range exhausts create negative pressure in the home. A smoke detector, a carbon monoxide detector, and a fire extinguisher are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance — and required for warranty coverage. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing, particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatrix wood insert (OB02028) with welded carbon-steel firebox and cast-iron door frame with ceramic glass\u003c\/li\u003e\n\u003cli\u003eFour-piece cast-iron flush-mount surround at 36 1\/8\" × 25 1\/8\" (top, left, right, and bottom pieces)\u003c\/li\u003e\n\u003cli\u003eHeat-activated 90 CFM single-speed tangential blower assembly with AUTO\/MANUAL\/OFF switch, mounted at the bottom of the insert\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and four stainless-steel secondary-air tubes\u003c\/li\u003e\n\u003cli\u003eHigh-density refractory firebrick lining\u003c\/li\u003e\n\u003cli\u003eInsert leveling bracket system (2 brackets) for rear-of-unit leveling in the masonry hearth\u003c\/li\u003e\n\u003cli\u003eThree liner fixation brackets and screws for connecting the stainless-steel liner to the flue collar\u003c\/li\u003e\n\u003cli\u003eDamper-removal notice plate (#27009) for installations where the masonry throat damper is removed\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, with R-value of at least 1.00 if hearth is raised less than 5 inches\u003c\/li\u003e\n\u003cli\u003eOptional faceplate backing plate kit (SBI AC01322 for 29\" × 44\" or AC01332 for 29\" × 50\") — for masonry openings larger than the standard 36 1\/8\" × 25 1\/8\" surround\u003c\/li\u003e\n\u003cli\u003eOptional 2\" or 4\" projection kit (SBI AC01323) — extends the insert forward of the fireplace facing when fireplace depth is insufficient; requires a faceplate backing plate kit (AC01322 or AC01332) to secure to\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for tight new-construction homes or code jurisdictions requiring outside combustion air\u003c\/li\u003e\n\u003cli\u003eOptional rigid fire screen (SBI AC01315) — for occasional attended fire viewing only where permitted by local code and only when used exactly as instructed in the fire screen manual; never leave the insert unattended when used with a fire screen. Open-door operation with a fire screen is prohibited in the United States and in Canadian provinces with particulate emission limits\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 75,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 14,200–44,500 BTU\/hr band per the CSA B415.1-10 stack-loss method. That's the same operating range as the Destination 2.3 sibling on the same SBI platform — they're tuned essentially identically for combustion and output.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a 30–45 minute warm-up, 2–3 hours of strong sustained heat once the firebox and surrounding masonry come up to temperature, then a gradual decline over the next 3–4 hours with a coal bed remaining. Total useful heat from one full pack is realistically 6–7 hours, occasionally approaching the 8-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. This is one of the underappreciated benefits of an insert versus a freestanding stove — the masonry stores and releases heat on its own cycle. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe 90 CFM heat-activated blower is what gets the heat into the room. Because most of the insert's firebox sits inside the masonry cavity, the radiant heat that would otherwise reach the room from a freestanding stove is partly absorbed by the surrounding brick. The convection jacket around the firebox captures that heat and the blower pushes it out into the room. With the switch in AUTO, the blower starts automatically once the insert is hot enough and stops when it cools — set the position and forget about it. With the switch in MANUAL, the blower runs continuously regardless of insert temperature.\u003c\/p\u003e\n\n\u003cp\u003ePer the manual, the blower can provide up to a 2% efficiency gain when used regularly, but it is not a way to gain more output from an undersized insert. Allow the insert to reach operating temperature (approximately one hour from a cold start) before turning the blower to MANUAL — increased airflow during start-up pulls heat away from the firebox and slows the build-up to clean combustion. AUTO mode handles this timing automatically.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic inserts, not specific to Osburn.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eInsert, not a freestanding stove.\u003c\/strong\u003e The Matrix Insert requires an existing masonry fireplace plus a full stainless-steel chimney liner — there's no other approved installation path. Buyers without a masonry fireplace should look at the Osburn 2000 or Osburn Matrix freestanding stove instead.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSame platform as the Destination 2.3 Insert; choose by aesthetic and brand.\u003c\/strong\u003e The Matrix Insert and the Enerzone Destination 2.3 Insert share the same SBI medium-large insert chassis — same 2.4 ft³ firebox, same 1.95 ft³ EPA loading volume, same combustion chamber dimensions, same 20-inch log capacity, same 75,000 BTU\/hr maximum, same 14,200–44,500 BTU\/hr tested range, same 2.3 g\/hr emissions, same 72% HHV \/ 77% LHV efficiency, same 90 CFM blower, same 8-hour maximum burn, same warranty schedule. The Matrix is the Osburn-branded version with a contemporary cast-iron flush-mount surround; the Destination 2.3 is the Enerzone-branded version at a different price point with different faceplate styling options. Choose between them by aesthetic preference, dealer relationship, and price — the underlying appliance is the same.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower noise is the most consistent owner complaint.\u003c\/strong\u003e The 90 CFM tangential blower is single-speed with a thermodisc heat sensor for AUTO operation — there is no variable-speed control or rheostat. Owner reviews on the manufacturer's site consistently flag the blower as louder than expected for an appliance in this price range. AUTO mode reduces total run time but does not change the volume when it's running. If quiet operation matters more than maximum heat transfer, the Enerzone Solution 2.3-I (different blower system) or a higher-tier insert with variable-speed blower may be a better fit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor handle has a known issue.\u003c\/strong\u003e Owner reports include the door handle ball-bearing screw working loose over time, and SBI publishes a model-specific door handle replacement instruction sheet (separate document 46372AF). Not a deal-breaker — the replacement is straightforward and the part is available through SBI dealers — but worth knowing before purchase. Periodic inspection of the door handle hardware is a reasonable maintenance habit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMedium-large firebox, medium-long burn time.\u003c\/strong\u003e A 2.4 ft³ non-cat insert gives you meaningful primary-heat capability across 1,200–1,800 sq ft, with realistic 6–7 hour burn cycles. If you want true 10+ hour overnight burns, step up to a 3.0+ ft³ insert (like the Pacific Energy Summit Insert LE) or to a catalytic insert with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 2,100 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across medium-large inserts is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~1,800 sq ft as primary winter heat in a cold climate or older home, step up a firebox size.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe blower is essential, not optional.\u003c\/strong\u003e Unlike a freestanding stove where the blower meaningfully improves heat distribution, on an insert the blower is what gets the heat into the room at all. Most of the firebox sits inside the masonry cavity, which absorbs radiant heat. The insert will run safely without the blower (useful in a power outage), but day-to-day heat into the room depends on the blower being on and working.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eExisting fireplace dimensions are non-negotiable.\u003c\/strong\u003e The masonry opening must meet the manual's minimum dimensions (23 3\/8\" H × 28 7\/8\" W × 19 5\/8\" D). Backing plates can cover a larger opening but cannot compensate for an undersized one. The projection kit can extend the insert forward by 2 or 4 inches if depth is short — and requires a faceplate backing plate kit to secure to — but not enough to fit a substantially shallow fireplace. Measure before purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eContemporary, not traditional.\u003c\/strong\u003e The cast-iron flush-mount surround is intentionally clean and modern. Buyers wanting heavy decorative cast iron, louvered faceplates, or visible-grille traditional styling should look at the Enerzone Solution 2.3-I (traditional faceplate option) or premium-tier alternatives.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first few fires cure the high-temperature paint and condition the internal components. Burn two or three small fires first, then build bigger, hotter fires until the paint smell is gone. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in. Fresh paint fumes can also trigger false alarms in smoke detectors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes the top-down method as the preferred ignition technique: small kindling on top, medium pieces below, light from the top so the fire burns downward. Place two small pieces on each side of the firebox, crumple 5–10 sheets of newspaper between them, cross the remaining small pieces over the newspaper, then place five larger pieces on top crossing them in two layers. Open the air control fully, light the paper, leave the door slightly ajar for about 5 minutes, then close the door with the air still fully open. Close gradually only when the firebox is full of bright turbulent flames and the wood edges are glowing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single lever located underneath the ash shelf. Push the handle completely to the left for high (open), completely to the right for low (closed). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. The manual specifies closing the primary air control gradually — too fast and the fire smolders. If flames diminish to the point of disappearing, the air was closed too early or the wood is too wet. This wood heater has a manufacturer-set minimum low burn rate that must not be altered — it is against federal regulations to alter this setting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower switch positions.\u003c\/strong\u003e The 90 CFM blower assembly has a three-position switch: AUTO (position 1, heat-sensor-controlled, starts when insert is hot and stops when cool), OFF (position 2, prevents the blower from starting automatically), and MANUAL (position 3, runs continuously). Use AUTO for normal operation. Allow the insert to reach operating temperature before turning the blower to MANUAL from a cold start.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–4 hours between reloads in active heating use; up to 7 hours for a final overnight pack with the air shut hard. Rake remaining charcoal toward the front of the firebox before loading — this concentrates the coals near where most of the combustion air enters and helps ignite the new load. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load with the new pieces toward the rear on top of the embers, close the door, and run the air open until the load is fully engaged before reducing gradually. Do not elevate the fire by using a grate or andirons.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e Empty ash every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. A whitish dusty deposit forms on the inner glass during normal operation and wipes off easily when the insert is cold. Light brown stains in the lower corners mean smoky combustion at low burn rates — usually wet wood or air closed too early. Brown streaks from the edge of the glass means the glass gasket needs replacement. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door. The latch mechanism is adjustable via the top and bottom bolts (depth and gasket tension) and the left and right bolts (handle angle) on the door pressure plate. Glass gasket is flat, adhesive-backed, woven fibreglass — must be centered on the edge of the glass during replacement and not stretched. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; weekly cleaning may be necessary in mild-weather low-burn conditions. If buildup reaches 1\/8 inch, sweep immediately. The baffle lifts out for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the blower manual specifically calls for lubrication. Owner reports note that bearings can develop a squeak after a season or two; pulling, cleaning, and adjusting the bearings typically resolves it. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor handle inspection.\u003c\/strong\u003e Periodically check the door handle hardware for looseness. SBI publishes a separate door handle replacement instruction sheet (document 46372AF) — keep the model and serial numbers handy when ordering replacement parts. The handle assembly is a normal wear item across the SBI medium-large insert platform.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney. Do not burn manufactured logs made of wax-impregnated sawdust or logs with chemical additives; 100% compressed-sawdust logs can be used with caution but never more than the manufacturer-recommended quantity.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCarbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Destination 2.3 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame SBI medium-large insert chassis as the Matrix — same 2.4 ft³ firebox, same 1.95 ft³ EPA loading, same combustion chamber, same 20\" log capacity, same 75,000 BTU\/hr maximum, same 14,200–44,500 BTU\/hr tested range, same 2.3 g\/hr emissions, same 72% HHV \/ 77% LHV efficiency, same 90 CFM blower, same 8-hour maximum burn, same warranty schedule. The Destination is the Enerzone-branded version at a different price point with different faceplate styling options. Choose between them by aesthetic preference, dealer relationship, and price — the underlying appliance is identical.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 2.3-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSame SBI 2.4 ft³ firebox class but with traditional keystone-style faceplate options (multiple sizes including cuttable for irregular openings) and a stronger 144 CFM blower system. The Solution 2.3-I is the more traditional aesthetic alternative on the same firebox platform with more aggressive heat distribution. Choose the Solution 2.3-I if you want a traditional look and a higher-CFM blower; choose the Matrix for the contemporary cast-iron flush-mount aesthetic.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 2000 Wood Stove\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eThe freestanding equivalent on the same firebox platform — same 2.4 ft³ firebox, same 75,000 BTU\/hr maximum, same 20\" log capacity, larger 130 CFM included blower (the freestanding doesn't have a masonry cavity absorbing radiant heat, so it benefits from more CFM). Choose the Osburn 2000 if you don't have an existing masonry fireplace, or if you want a freestanding stove for visual presence and full radiant heat in the room; choose the Matrix Insert if you have a masonry fireplace to convert.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Summit Insert LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-up cross-brand competitor in the larger-firebox insert class. 3.0 ft³ firebox, 99,000 BTU\/hr maximum, 1.8 g\/hr emissions, 20\" log capacity, and Pacific Energy's Extended Burn Technology rated for up to 10 hours of controlled burning. Premium build, higher price, meaningfully larger firebox. Choose the Summit Insert LE if you need a bigger firebox, longer burn times, and don't mind the higher cost; choose the Matrix Insert for a smaller footprint and the Osburn brand at a more accessible price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Matrix Insert is the contemporary cast-iron wood insert in the Osburn line — the Osburn-tier counterpart to the Enerzone Destination 2.3 on the same proven SBI chassis. Built to turn an existing masonry fireplace into a clean-burning serious heat source, with one of the largest near-square viewing glasses in its class, 20-inch logs, an 8-hour burn cycle, and the 90 CFM heat-activated blower included as standard. Measure the opening, install it right, burn good wood, and it carries you through winter.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Default Title","offer_id":49276983017665,"sku":"OB02028","price":3949.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-matrix-i-wood-insert-front-ob02028.webp?v=1748288915"},{"product_id":"osburn-3500-i-wood-insert","title":"Osburn 3500-I Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; 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}\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 3.5 ft³ non-catalytic steel wood insert built for large existing masonry fireplaces with a 26 1\/4\" × 31\" × 18 3\/8\" minimum opening — the powerhouse of the Osburn insert line. EPA 2020 cordwood certified at 71% HHV efficiency and 1.6 g\/hr emissions, with a 22-inch maximum log capacity, up to 2,700 sq ft of heating area, a 10-hour maximum burn time, 110,000 BTU\/hr maximum output, and a powerful 144 CFM heat-activated blower included as standard. Cast-iron arched door with configurable Black or Brushed Nickel door overlay, Medium 32\" × 44\" or Large 32\" × 50\" faceplate, and matching trim in Black or Brushed Nickel.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of a large existing masonry fireplace who want serious primary heat output instead of a decorative open fire — single-family homes, well-insulated cabins, or open-plan spaces of roughly 1,500–2,400 sq ft, with reasonable insulation and access to seasoned hardwood at 15–20% moisture content.\u003c\/p\u003e\n\n\u003cp\u003eSuited to homeowners whose existing masonry opening is large enough to accept a 26 1\/4\" tall × 31\" wide × 18 3\/8\" deep minimum footprint — meaningfully larger than what most small inserts require. The 22-inch maximum log capacity, 144 CFM included blower, and 3.5 ft³ firebox put this in serious primary-heat territory, not supplemental.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want comprehensive visual configurability: cast-iron arched door with Black or Brushed Nickel door overlay, Medium 32\" × 44\" or Large 32\" × 50\" faceplate, and matching faceplate trim in Black or Brushed Nickel — eight finished-look combinations to match home decor. Door overlay, faceplate size, and trim are all configured at order, not field-swappable.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who prefer the Osburn premium-tier finish detailing — the cast-iron door overlay specifically — over the plainer Enerzone Solution 3.5 Insert, which uses the same chassis at a lower price.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers with smaller hearths. The 31-inch minimum width alone excludes a substantial percentage of older masonry fireplaces — measure before buying. If your opening is borderline, the smaller Osburn Matrix 2700 or Osburn 1700-I is the right tool.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers expecting 14–20+ hour overnight burns. Non-catalytic inserts can leave usable coals after an overnight load, but meaningful heat output is front-loaded. Expect roughly 6–9 hours of useful heat from a packed load of dense hardwood, occasionally approaching the 10-hour manufacturer maximum in favorable conditions; for longer low-output burns, a catalytic or hybrid insert is the right tool.\u003c\/p\u003e\n\n\u003cp\u003eNot for small spaces under 1,200 sq ft — at this firebox volume the insert can easily overheat the room at any meaningful burn rate, forcing low burns that smolder, blacken the glass, and produce creosote.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat insert but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e3.5 ft³ overall \/ 2.88 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Among the larger non-catalytic insert fireboxes on the market. Loads up to 50 lb of cordwood when packed. The overall figure includes a buffer zone above the EPA loading line; the 2.88 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e110,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17,200–57,800 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1,000–2,700 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,500–2,400 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e71% HHV \/ 76% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e77% optimum overall efficiency at low burn rate; 75% optimum heat transfer efficiency. HHV is the federal standard. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.6 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. EPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The insert is listed as compliant with the 2020 cordwood standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 10 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 6–9 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e22 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Loading over width and over depth — the 3500-I accepts logs east-west across the 22 7\/8\" firebox width, and shorter splits load north-south across the 20 1\/8\" firebox depth. Owners regularly fit 8–10 medium splits N-S for overnight burns.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with a cast-iron arched glazed door. 3\/16\" body, 5\/16\" top. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 7\/8\" × 11 3\/4\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLarge arched ceramic glass with air-wash, 5\/32\" (4 mm) thick, tested to 1,400 °F per manual. One of the larger viewing windows in the SBI insert lineup. Replacement must be SCHOTT ceramic with the same specification — tempered or ordinary glass will not withstand the operating temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, up to 144 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Variable-speed tangential blower (HI \/ LO \/ OFF) with thermodisc heat sensor for automatic on\/off based on insert temperature. For an insert, where most of the firebox sits inside the masonry cavity, the blower is what gets the heat into the room.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Liner must conform to UL 1777 (USA), CAN\/ULC-S635, or CAN\/ULC-S640 (Canada). Per manual, minimum liner height 15 feet. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e22 7\/8\" W × 20 1\/8\" D × 12 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manual. Designed for loading over both width and depth — the 20 1\/8\" depth is the deepest in the Osburn insert line, which is what makes practical N-S loading possible at this firebox size.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e19\" W × 9 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening per manufacturer's official spec. Accommodates 22-inch logs loaded east-west.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e30 3\/8\" W × 29\" D × 24 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions excluding the faceplate.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e26 1\/4\" H × 31\" W × 18 3\/8\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. The 31\" width is the most common reason this insert does not fit a given hearth. Measure carefully before ordering. See \"Where it can go\" for faceplate options.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e540 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling — three-person minimum is reasonable for this weight class. Remove loose internal components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn 3500-I is designed to slide into an existing code-compliant masonry fireplace with a connected and inspected masonry chimney. It is not approved for installation in a factory-built (prefab) metal fireplace, in a mobile home, in any outdoor or unconditioned space, or as a freestanding stove.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e26 1\/4\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e31\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e18 3\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the width. Plan for a small installation margin above the insert to seat the liner adapter — an opening exactly at the minimum will be a tight install. Borderline openings frequently require removal of the masonry damper assembly and an offset liner adapter at the insert flue collar. The 31-inch minimum width is the most common reason this insert does not fit a given hearth — measure carefully before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eFaceplate size\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eFinish\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eMedium (32\" × 44\")\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eBlack or Brushed Nickel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eLarge (32\" × 50\")\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eBlack or Brushed Nickel\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eTrim color matches the faceplate finish. The cast-iron door overlay is selected separately in Black or Brushed Nickel — most buyers match both. Selected at order, not field-swappable.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAdjacent combustible side wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e19\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible side mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e9\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible top mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop of insert to combustible shelf\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform \/ floor protection to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe certification label on the back of the insert always overrides clearance figures published elsewhere. Reduced clearances are not available by means of heat shields on this insert — the figures above are the binding minimums.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFloor protection requirements depend on whether the existing masonry hearth is raised 4 inches or more above the surrounding combustible floor. If the hearth is raised 4 inches or more, a non-combustible floor protector with no R-value is required and must extend at least 16 inches in front of the unit in the USA, 18 inches in Canada. If the hearth is raised less than 4 inches, a non-combustible floor protector with an R-value of at least 1.00 is required and must extend at least the same distance in front of the unit. The manual includes a thermal-resistance lookup table for common floor protection materials (brick, cement board, ceramic tile, marble) to calculate the required R-value combination. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation. Final hearth protection must be calculated from the manual's floor-protection worksheet and approved by the installer\/AHJ.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 3500-I requires a continuous 6-inch stainless-steel chimney liner extending from the insert flue collar to the top of the chimney. The liner must conform to ULC S635 or CAN\/ULC-S640 (Canada) or UL 1777 (USA) and be rated for solid fuel. The minimum liner height is 15 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eThe insert is not approved for a \"positive flue connection\" to clay tile — a continuous stainless liner is required. If the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed. A sheet-metal block-off plate sealed at the damper level (or, in Canada per CSA B365, mineral wool packing around the liner) is recommended at the throat to reduce cold-air backdraft and to allow the insert to deliver rated performance — without it, jacket-recovered heat is lost into the smoke chamber. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air or for tight new-construction homes with mechanical ventilation. In conventional homes the manual identifies room air as the safest and most reliable supply for combustion; almost all houses have enough natural leakage to provide what the insert needs. A smoke detector and carbon monoxide detector are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 3500-I wood insert (OB03510) with welded carbon-steel firebox and cast-iron arched glazed door\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required door overlay and faceplate\/trim selections — see \"Where it can go\" for the options\u003c\/li\u003e\n\u003cli\u003e144 CFM variable-speed tangential blower with included thermodisc heat sensor for automatic on\/off\u003c\/li\u003e\n\u003cli\u003eAsh lip\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eRefractory firebrick lining\u003c\/li\u003e\n\u003cli\u003eRemovable wood-grip air-control handle\u003c\/li\u003e\n\u003cli\u003eLiner fixation brackets and hardware\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, with R-value of at least 1.00 if hearth is raised less than 4 inches\u003c\/li\u003e\n\u003cli\u003eSheet-metal block-off plate, high-temp silicone, and mineral wool insulation — effectively required in practice for the insert to deliver rated performance\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for code jurisdictions requiring outside combustion air or for tight new-construction homes\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch × 4' insulated flex pipe for fresh-air intake (SBI AC02090) — HVAC type, ULC S110 or UL 181 class 0 or class 1\u003c\/li\u003e\n\u003cli\u003eOptional liner hook-up system (SBI AC02006) — simplifies liner-to-flue-collar connection\u003c\/li\u003e\n\u003cli\u003eOptional offset liner adapter (SBI AC01214) — for installations where the chimney throat geometry requires offset connection\u003c\/li\u003e\n\u003cli\u003eOptional rigid fire screen (SBI AC01281) — not permitted for open-door use in the United States or in Canadian provinces\/jurisdictions with particulate-emission limits; never leave the insert unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional tempered glass hearth pad 10mm 18\" × 50\" (SBI AC02760)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 110,000 BTU\/hr figure is a maximum-output rating based on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal operation. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 17,200–57,800 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a fast warm-up, 2–3 hours of strong sustained heat, then a gradual decline over the next several hours with a heavy coal bed remaining. Total useful heat from one full pack is realistically 6–9 hours in normal heating use, occasionally approaching the 10-hour manufacturer maximum with dense hardwood, mild weather, and a full coal bed.\u003c\/p\u003e\n\n\u003cp\u003eThe 22-inch maximum log capacity is a practical advantage. Most firewood suppliers cut to 16 inches, which is also the manual's recommended length. An insert that takes up to 22 inches lets you load larger splits with less labor when your supplier cuts longer. The firebox accommodates loading over both width (E-W) and depth (N-S) — the 20 1\/8\" firebox depth is the deepest in the Osburn insert line and makes N-S loading practical for overnight loads. Owners regularly fit 8–10 medium splits N-S for full overnight burns.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. This is one of the underappreciated benefits of an insert versus a freestanding stove — the masonry stores and releases heat on its own cycle. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe included 144 CFM tangential blower meaningfully improves heat transfer from the air jacket into the room. There are two controls: a manual rheostat marked HI \/ LO \/ OFF that you set, and an automatic heat sensor (thermodisc) that decides when the blower actually runs. Set the rheostat to LO or HI, and the sensor handles the rest — the insert takes about an hour to reach blower-activation temperature from a cold start, then the sensor starts the blower automatically and shuts it off when the insert cools at the end of a burn. At lower settings the blower is unobtrusive; at higher settings it is audible.\u003c\/p\u003e\n\n\u003cp\u003eAllow the insert to reach operating temperature (approximately one hour from a cold start) before turning the blower to high speed. Per the manual, turning the blower on too early during start-up pulls heat away from the firebox and slows the build-up to clean combustion.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar — universal to non-catalytic tube inserts, not specific to Osburn.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe opening is the gating factor.\u003c\/strong\u003e The 26 1\/4\" × 31\" × 18 3\/8\" minimum masonry opening is meaningfully larger than the smaller Osburn inserts. The 31-inch minimum width in particular excludes a substantial percentage of older masonry fireplaces. Measure carefully before buying — and if the opening is borderline, the Osburn Matrix 2700 (31 3\/4\" minimum width but with different depth requirements) or the Osburn 1700-I (27 1\/2\" minimum width) is the right tool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat insert gives you simpler operation and no catalyst to replace, but you pay for it with shorter burns than a catalytic equivalent. If you want to load at 9 PM and have meaningful heat at 6 AM, this is not the right tool — that's what a catalytic or hybrid-catalytic insert is built for. Plan on reloading every 4–6 hours during active heating and accepting that overnight will end at coals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood loading is a daily activity.\u003c\/strong\u003e A full load of dense hardwood is heavy and physically involved; in cold-climate primary-use patterns, wood handling becomes a daily chore, not an occasional task. Wood has to be split, stacked off the ground, top-covered, and seasoned to 15–20% moisture before use. Most local firewood suppliers can deliver hardwood by the cord; confirm whether they sell genuinely seasoned wood or plan to season it yourself.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload technique matters.\u003c\/strong\u003e Reload onto an active coal bed, open the air fully before opening the door, and open the door slowly to avoid smoke rollout. After reloading, run the air open until the new load is fully engaged, then reduce the air gradually. Owners on this platform consistently report that E-W loading is more sensitive to this than N-S — closing the door too soon when loading E-W causes the load to smolder. Do not leave the insert unattended with the door partly open.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e This is the non-cat tube design — secondary combustion only burns clean at higher temperatures. The fix is a daily hot burn cycle to clean off accumulated tar, dry wood at 20% moisture or below, and tolerance for a brief cleaning every few days during low-and-slow weather.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLiner, block-off plate, and labor are not in the appliance price.\u003c\/strong\u003e The insert is the appliance; the chimney liner, the block-off plate, the insulation wrap, and the professional installation are separate purchases that need to be planned for. Older or taller chimneys, offset flues, and damper-frame removal add to install complexity. Skipping the liner, the block-off plate, or the insulation wrap saves money up front and costs measurable performance and creosote durability after.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e540 lb shipping weight is heavy.\u003c\/strong\u003e Plan for three-person handling minimum and verify the installation route — stairs, narrow doorways, and tight masonry access make the install meaningfully harder than for smaller inserts. Several owner reports cite installation difficulty as the single hardest part of owning this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower auto-activation can be finicky.\u003c\/strong\u003e Owner reports occasionally cite blower thermodisc activation issues — the blower failing to engage automatically when the insert reaches operating temperature, or running constantly regardless of switch position. The issue is usually improper thermodisc seating against the insert body during installation; have the installer verify the sensor mounting before sign-off. Some owners report waiting over an hour for the blower to engage from a cold start, which is within manufacturer expectations but feels slow if you're used to a faster-responding insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlain styling, finished by configuration.\u003c\/strong\u003e The Osburn 3500-I has clean, simple lines: a cast-iron arched door, a steel jacket, and a faceplate that flashes around the masonry opening. The eight visual configurations available through door overlay × faceplate size × trim finish dress it up considerably, but it is fundamentally a working appliance, not an ornate cast-iron showpiece. Buyers used to Vermont Castings, Jotul, or Woodstock decorative cast-iron inserts may find the styling honest rather than decorative.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration is a one-time decision.\u003c\/strong\u003e Door overlay color, faceplate size, and trim finish are all configured at order, not field-swappable. The combinations let the insert fit many room layouts and aesthetics, but choose the configuration that matches the fireplace you're installing into — measure the opening and confirm the look before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHeavy-duty internals, functional finish.\u003c\/strong\u003e The welded carbon-steel firebox, C-Cast baffle, lifetime weld warranty, and 144 CFM blower are strong points for the category. The overall fit-and-finish is practical rather than luxury: this is a heating appliance first.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in. Run the insert hot and expect the smell to disappear permanently after the cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes a top-down conventional method as effective on the Osburn 3500-I — small splits at the base, smaller splits crossed over, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature. Leave the door slightly ajar for a few minutes during light-off; close once the fire is well established.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A flue thermometer is strongly recommended; without one, you are guessing at draft, burn rate, and overfire risk. Do not elevate the fire by using a grate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 4–6 hours between reloads in active high-output use; 6–8 hours for a final overnight pack with the air shut hard. Open the air, wait briefly, open the door slowly to avoid smoke rollout, rake coals forward, load onto the coal bed, close the door, and run the air open until the new load is fully engaged before reducing the air gradually. Turn the blower OFF before opening the door fully to reduce ash disturbance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Osburn 3500-I uses a hollow-bottom firebox; ash is scooped manually from the front. Empty ash every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days and releases carbon monoxide. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door, not just at the latch. The latch mechanism is adjustable — remove the split pin with pliers and turn the handle one counterclockwise turn to increase pressure. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney and liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the manual specifically calls for lubrication. If the blower fails to engage automatically when the insert reaches operating temperature, have the installer or dealer inspect the thermodisc mounting and contact with the insert body — improper seating is the most common cause of auto-activation issues on this insert. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefractory bricks and baffle.\u003c\/strong\u003e The intense heat of the fire can cause slight cracks in the refractory bricks — minor cracks do not reduce effectiveness. Inspect periodically and replace any wider cracks. The baffle and secondary tubes can be removed for sweep access and inspection. Operation with a cracked or missing baffle may cause unsafe temperatures and voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChimney fire response.\u003c\/strong\u003e If a chimney fire occurs: close the insert door and the air-intake control, alert occupants, contact the fire department if assistance is needed, use a dry chemical fire extinguisher or baking soda or sand to control the fire (never water — it causes a dangerous steam explosion), and do not use the appliance again until the insert and chimney have been inspected by a qualified chimney sweep or fire-department inspector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRemovable carbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 3.5 Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eEnerzone-branded sibling on the same SBI 3500 chassis. Same 3.5 ft³ firebox, same 110,000 BTU\/hr maximum, same 22-inch log capacity, same 144 CFM blower, same 71% HHV efficiency, same 1.6 g\/hr emissions, same 10-hour burn time, same minimum masonry opening, same warranty schedule. The difference is aesthetic and brand tier: the Osburn 3500-I adds the configurable cast-iron door overlay (Black or Brushed Nickel) on top of the faceplate\/trim choices; the Enerzone has the silver-grooved styling without the door-overlay configurability. Choose the Osburn 3500-I for the door-overlay customization and the premium Osburn positioning; choose the Enerzone for the silver-grooved styling at the Enerzone price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Matrix 2700 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-down sibling in the Osburn insert line. Smaller 2.5 ft³ firebox, 80,000 BTU\/hr maximum, 750–2,200 sq ft heating range, 20-inch log capacity, 8-hour maximum burn, 64% HHV efficiency, 1.2 g\/hr emissions (class-leading for Osburn), 176 CFM blower. Contemporary flush-mount cast-iron faceplate with the largest viewing window in the Osburn line. Different masonry depth requirement (22 1\/8\" vs the 3500-I's 18 3\/8\"). Choose the Matrix 2700 for the contemporary flush-mount aesthetic, the cleaner-burning 1.2 g\/hr emissions, and the larger viewing window; choose the 3500-I for the larger firebox, longer burn cycles, and primary-heat capacity above 2,200 sq ft.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller step-down sibling in the Osburn insert line. 1.86 ft³ firebox, 65,000 BTU\/hr maximum, 500–1,800 sq ft heating range, 18-inch log capacity, 7-hour maximum burn, 144 CFM blower. Configurable Regular\/Large faceplate in Black or Brushed Nickel plus configurable door overlay. Much smaller masonry opening required (21 1\/2\" × 27 1\/2\" × 12 7\/8\"). Choose the 1700-I for shallower masonry openings, smaller spaces, or as a step-down from the 3500-I when 1,800+ sq ft heating isn't needed.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Summit Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand competitor in the large insert class. Comparable firebox volume and heating capacity, Pacific Energy's well-regarded sealed-firebox technology with single-lever non-cat operation, premium build, higher price. The most common cross-shop with the Osburn 3500-I for buyers weighing premium Pacific Energy fit-and-finish against the SBI dealer\/parts accessibility and the Osburn price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eBlaze King Princess Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eDifferent category — catalytic technology, thermostatic air control, and 12–30 hour low-output burn potential. Choose this if your priority is overnight burn time, controllability, or off-grid heating with fewer reloads. Higher price, requires catalyst monitoring and eventual replacement, longer learning curve. The 3500-I wins on simplicity, peak heat output, and dealer\/parts accessibility.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Osburn 3500-I is the dressed-up sibling of the Enerzone Solution 3.5 Insert and the powerhouse of the Osburn insert line. Same firebox, same heat, same install — what you're buying is the configurable cast-iron door overlay, the faceplate sizing and trim choices, and the Osburn premium-tier finish. If those matter to the room, and the masonry opening is big enough to take it, this is the right one.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Black","offer_id":49276992848065,"sku":"OB03510+OA10163+OA10032+OA10125","price":4279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Brushed Nickel","offer_id":49276992913601,"sku":"OB03510+OA10163+OA10032+OA10126","price":4279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large Black","offer_id":49276993241281,"sku":"OB03510+OA10163+OA10033+OA10128","price":4279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Large Brushed Nickel","offer_id":49276993306817,"sku":"OB03510+OA10163+OA10033+OA10129","price":4279.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Black","offer_id":49276992880833,"sku":"OB03510+OA10164+OA10032+OA10125","price":4499.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Brushed Nickel","offer_id":49276992946369,"sku":"OB03510+OA10164+OA10032+OA10126","price":4499.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Large Black","offer_id":49276993274049,"sku":"OB03510+OA10164+OA10033+OA10128","price":4499.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Large Brushed Nickel","offer_id":49276993339585,"sku":"OB03510+OA10164+OA10033+OA10129","price":4499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-3500-i-wood-insert-front-ob03510_b6e29d4f-90d0-41d8-be2a-035b93d56a69.webp?v=1748291614"},{"product_id":"osburn-matrix-2700-wood-insert","title":"Osburn Matrix 2700 Wood Insert","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.5 ft³ non-catalytic large wood insert built around a contemporary cast-iron faceplate with the largest viewing window in the Osburn insert line — 24 3\/8\" × 12 5\/8\" of ceramic glass set flush into a masonry fireplace. EPA 2020 cordwood certified at 1.2 g\/hr published average particulate emissions (well below the 2.5 g\/hr cordwood limit), with a 20-inch maximum east-west log capacity, up to 2,200 sq ft of heating area, an 8-hour maximum burn time, 80,000 BTU\/hr maximum output, and a powerful 176 CFM heat-activated blower included as standard. Configurable Black or Brushed Nickel cast-iron door overlay.\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of a working masonry fireplace with a large opening who want to convert an inefficient open hearth into a serious primary heat source — up to 2,200 sq ft of zone heating capability with a 2.5 ft³ firebox, 20-inch log capacity, and an 8-hour maximum burn cycle. Reasonable insulation, access to seasoned hardwood at 15–20% moisture, and an existing masonry fireplace that meets the minimum opening dimensions (27 1\/8\" H × 31 3\/4\" W × 22 1\/8\" D per manual) are the basic requirements.\u003c\/p\u003e\n\n\u003cp\u003eBuyers heating 1,500–2,000 sq ft as primary winter heat in moderate climates, or 1,200–1,500 sq ft in cold climates and older homes. The Matrix 2700 sits in the upper-middle of the Osburn insert line — meaningfully more firebox than the 1700-I, with a different aesthetic and heat-distribution profile from the larger 3500-I.\u003c\/p\u003e\n\n\u003cp\u003eBuyers prioritizing low emissions. At 1.2 g\/hr published average particulate emissions, the Matrix 2700 is class-leading among Osburn wood inserts and well below the EPA 2020 cordwood limit (2.5 g\/hr). For EPA non-attainment counties, jurisdictions with stricter local emission rules, or buyers who simply want the cleanest-burning insert available in this size class, this is the right tool.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want a contemporary aesthetic and the largest viewing window. The 24 3\/8\" × 12 5\/8\" wide-format ceramic glass is the largest in the Osburn insert line, set into a flush-mount cast-iron faceplate that sits cleanly inside the existing masonry opening rather than projecting forward. Wide picture-frame proportions, configurable cast-iron door overlay in Black or Brushed Nickel.\u003c\/p\u003e\n\n\u003cp\u003eBuyers who want the most powerful blower in the Osburn insert lineup. The 176 CFM heat-activated double-cage blower meaningfully outperforms the 144 CFM blowers used in the smaller and larger Osburn inserts. For an insert — where most of the firebox sits inside the masonry cavity — blower CFM is what gets the heat into the room.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers without an existing code-compliant masonry fireplace with a large opening. Wood inserts must be installed inside a lined masonry fireplace with a continuous stainless-steel chimney liner running the full height. This insert requires a substantial opening (27 1\/8\" H × 31 3\/4\" W × 22 1\/8\" D per manual) — many older or smaller fireplaces will not accept it. Not approved for factory-built (prefab) metal fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers heating under 1,200 sq ft. The 2.5 ft³ firebox will overheat a smaller space and force you to run it inefficiently. For smaller spaces, step down to the Osburn 1700-I.\u003c\/p\u003e\n\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. The 8-hour manufacturer maximum is achievable on a packed load of dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 6–7 hours. For longer burns, consider a catalytic insert in this size class.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; one air-control lever; simpler operation than a cat insert but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eInstallation type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMasonry insert\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInstalls inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. Not approved for factory-built fireplaces, mobile homes, alcoves, or freestanding installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.5 ft³ overall \/ 1.94 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Large firebox sized for primary zone heating across 750–2,200 sq ft. The overall figure includes a buffer zone above the EPA loading line; the 1.94 ft³ figure is the usable loading volume used during EPA emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e80,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12,700–60,700 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. A wide tested range — the Matrix 2700 delivers usable heat from very low burn rates suitable for shoulder-season heating up through strong sustained output for cold-snap heating.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e750–2,200 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,500–2,000 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e64% HHV \/ 68% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e70% optimum overall efficiency at low burn rate; 68% optimum heat transfer efficiency. HHV is the federal standard. Lower than smaller inserts in the Osburn line — the 2700 trades efficiency for class-leading emissions performance and higher BTU capacity. Government incentives may apply by jurisdiction and installation date.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.2 g\/hr (published average)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer's published spec table. EPA 2020 limits are 2.0 g\/hr crib-wood or 2.5 g\/hr cordwood. The Matrix 2700's published rate is class-leading among Osburn wood inserts and well below the federal limit — a meaningful advantage in EPA non-attainment counties and jurisdictions with stricter local rules.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum at the lowest air setting. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e4-inch margin over the recommended length — meaningful for buyers with access to longer-cut firewood. Logs load across the width of the firebox, sides visible from the door.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCarbon steel, cast-iron faceplate and door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded carbon-steel firebox with a flush-mount cast-iron faceplate and a glazed cast-iron door. 3\/16\" body, 3\/16\" top. Lifetime warranty on the combustion-chamber welds.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eBlack or Brushed Nickel\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCast-iron door overlay across the front of the door. Configurable at order — one overlay is required to complete the unit. The signature Osburn finish detail that distinguishes the Matrix 2700 from the louvered Enerzone Destination 2.7.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e24 3\/8\" × 12 5\/8\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLargest viewing window in the Osburn insert line. Wide-format ceramic glass with air-wash, 5\/32\" (4 mm) thick, tested to 1,400 °F per manual. The horizontal picture-frame proportions make the glass the visual focus of the unit. Replacement glass must be SCHOTT ceramic with the same specification — tempered or ordinary glass will not withstand the operating temperatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eIncluded, up to 176 CFM\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Powerful double-cage heat-activated blower with rheostat speed control and thermodisc auto-on. The most powerful blower in the Osburn insert line. Three-position switch: AUTO (starts when insert is hot, stops when cool), MANUAL (runs continuously), or OFF.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in (insert liner)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Requires a continuous stainless-steel chimney liner running the full height of the masonry chimney. Liner must conform to UL 1777 (USA), CAN\/ULC-S635, or CAN\/ULC-S640 (Canada). Per manual, minimum chimney height 15 feet. Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e22 5\/8\" W × 12 7\/8\" D × 12 3\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Designed for east-west loading across the width of the firebox. North-south loading is not practical at this depth.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e25 3\/8\" W × 10 1\/2\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWide horizontal loading door opening — significantly wider than smaller inserts in the line. Accommodates 20-inch logs loaded east-west with room to spare.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e43 5\/8\" W × 27 1\/4\" D × 30 1\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions including the cast-iron faceplate.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum masonry opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e27 1\/8\" H × 31 3\/4\" W × 22 1\/8\" D\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Substantial opening required — measure carefully before ordering. See \"Where it can go\" for projection kit and cuttable faceplate options.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e535 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling — three-person minimum is reasonable for this weight class. Remove loose internal components as appropriate during installation to reduce handling weight.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNot certified for mobile-home installation under any configuration.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Matrix 2700 is approved only for installation inside an existing code-compliant masonry fireplace with a continuous stainless-steel chimney liner. It is not approved for installation in factory-built (prefab) metal fireplaces, in mobile or manufactured homes, in alcoves, or as a freestanding unit. The masonry fireplace and chimney must be inspected before installation for cracks, loose mortar, creosote, blockage, or other signs of deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eMinimum masonry opening\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eDimension\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeight\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e27 1\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eWidth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e31 3\/4\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDepth\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e22 1\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eIf a fresh-air intake is being installed, add at least 4 inches to the width. Plan for a small installation margin above the insert to seat the liner adapter — an opening exactly at the minimum will be a tight install. Measure carefully before ordering. The 22 1\/8\" minimum depth is meaningfully deeper than smaller Osburn inserts and is the most common reason this insert does not fit a shallower hearth.\u003c\/p\u003e\n\n\u003ch3\u003eProjection kit (optional)\u003c\/h3\u003e\n\u003cp\u003eIf the fireplace depth is less than the minimum 22 1\/8\", the optional projection kit (SBI AC01263) extends the insert 2 or 4 inches forward of the fireplace facing. With the kit installed, the depth requirement reduces to 20 1\/8\" (2\" projection) or 18 1\/8\" (4\" projection). Ordered as a separate accessory.\u003c\/p\u003e\n\n\u003ch3\u003eFaceplate options\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eConfiguration\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eSize\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eStandard faceplate (included)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e30 1\/8\" × 43 5\/8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCuttable faceplate (optional, SBI AC01277)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e34\" × 50\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe standard cast-iron faceplate covers most masonry openings. For larger openings, the optional 18-gauge cuttable faceplate extends the cover area — the edges can be trimmed to contour an arched fireplace or to minimize visible flashing. The door overlay (Black or Brushed Nickel) is configured at order — one overlay is required to complete the unit.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eMin\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAdjacent combustible side wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e19\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible side mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e9 1\/2\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFaceplate to combustible top mantel\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e12\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop of insert to combustible shelf\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e12\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePlatform \/ floor protection to ceiling\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe certification label on the back of the insert always overrides clearance figures published elsewhere. Reduced clearances are not available by means of heat shields on this insert — the figures above are the binding minimums.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection\u003c\/h3\u003e\n\u003cp\u003eFloor protection requirements depend on whether the projection kit is installed and whether the existing masonry hearth is raised above the surrounding combustible floor. Without the projection kit, the manual requires a non-combustible floor protector extending at least 18 inches in front of the unit in Canada or 16 inches in the USA, measured from the door opening. If the masonry hearth is level with or only slightly raised above the surrounding combustible floor, an R-value floor protector may be required per the manual's floor-protection worksheet. With the projection kit installed, the forward extension threshold increases. The manual includes a thermal-resistance lookup table for common floor protection materials (brick, cement board, ceramic tile, marble) to calculate the required R-value combination. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation. Final hearth protection must be calculated from the manual's floor-protection worksheet and approved by the installer\/AHJ.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and liner\u003c\/h3\u003e\n\u003cp\u003eThe Matrix 2700 requires a continuous 6-inch stainless-steel chimney liner extending from the insert flue collar to the top of the chimney. The liner must conform to ULC S635, CAN\/ULC-S640 (Canada) or UL 1777 (USA) and be rated for solid fuel. The minimum liner height is 15 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003cp\u003eThe Matrix 2700 performs best with a 6-inch stainless-steel chimney liner. In the USA, use a 6-inch liner listed to UL 1777. In Canada only, connection to a chimney liner of at least 5 inches may be permitted if it properly vents combustion gases, the total masonry chimney height is greater than 20 feet, and the application is verified and authorized by a qualified installer. The insert is not approved for a positive flue connection to clay tile — a continuous stainless liner is required.\u003c\/p\u003e\n\n\u003cp\u003eIf the existing fireplace's throat damper is to remain, it must be locked open to clear the liner; otherwise the damper plate must be removed. A sheet-metal block-off plate sealed at the damper level (or, in Canada per CSA B365, mineral wool packing around the liner) is recommended at the throat to reduce cold-air backdraft and to allow the insert to deliver rated performance — without it, jacket-recovered heat is lost into the smoke chamber. An insulated liner (or pre-insulated liner with a wrap) improves draft and reduces creosote, and is required by code in some jurisdictions for clearance reasons.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eAn optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air or for tight new-construction homes with mechanical ventilation. In conventional homes the manual identifies room air as the safest and most reliable supply for combustion; almost all houses have enough natural leakage to provide what the insert needs. A smoke detector and carbon monoxide detector are required in the room where the insert is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the insert is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. In Canada the CSA B365 standard applies; in the USA, ANSI NFPA 211 applies. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the insert\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn Matrix 2700 wood insert (OB02700) with welded carbon-steel firebox and cast-iron glazed door\u003c\/li\u003e\n\u003cli\u003eStandard cast-iron faceplate (30 1\/8\" × 43 5\/8\")\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required door overlay selection — see \"Where it can go\" for the options\u003c\/li\u003e\n\u003cli\u003e176 CFM heat-activated double-cage blower assembly with rheostat speed control and three-position switch (AUTO \/ OFF \/ MANUAL)\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eMoulded refractory bricks lining (floor, sides, back)\u003c\/li\u003e\n\u003cli\u003eAdjustable threaded legs\u003c\/li\u003e\n\u003cli\u003eRemovable air-control handle\u003c\/li\u003e\n\u003cli\u003eLiner fixation brackets and hardware\u003c\/li\u003e\n\u003cli\u003eOwner's manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6-inch continuous stainless-steel chimney liner kit (UL 1777, CAN\/ULC-S635, or CAN\/ULC-S640) — required for installation, sized to the chimney height\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protector sized per manual specifications, extending at least 16 inches in front of the unit in the USA, 18 inches in Canada\u003c\/li\u003e\n\u003cli\u003eSheet-metal block-off plate, high-temp silicone, and mineral wool insulation — effectively required in practice for the insert to deliver rated performance\u003c\/li\u003e\n\u003cli\u003eOptional projection kit, 2\" or 4\" (SBI AC01263) — for installations where the fireplace depth is less than the 22 1\/8\" minimum\u003c\/li\u003e\n\u003cli\u003eOptional 34\" × 50\" cuttable faceplate, 18 GA (SBI AC01277) — for masonry openings larger than the standard faceplate covers\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch fresh-air intake kit (SBI AC01298) — for code jurisdictions requiring outside combustion air or for tight new-construction homes\u003c\/li\u003e\n\u003cli\u003eOptional 5-inch × 4' insulated flex pipe for fresh-air intake (SBI AC02090) — HVAC type, ULC S110 or UL 181 class 0 or class 1\u003c\/li\u003e\n\u003cli\u003eOptional firescreen door (SBI AC01275) — for occasional attended fire viewing only where permitted by local code and only when used exactly as instructed in the fire screen manual; never leave the insert unattended when used with a fire screen\u003c\/li\u003e\n\u003cli\u003eOptional liner hook-up system (SBI AC02006) — simplifies liner-to-flue-collar connection\u003c\/li\u003e\n\u003cli\u003eOptional offset liner adapter (SBI AC01214) — for installations where the chimney throat geometry requires offset connection\u003c\/li\u003e\n\u003cli\u003eOptional tempered glass hearth pad 10mm 18\" × 50\" (SBI AC02760)\u003c\/li\u003e\n\u003cli\u003ePin-type wood moisture meter — not optional in practice\u003c\/li\u003e\n\u003cli\u003eFlue thermometer — strongly recommended for insert installations since stove-top temperature isn't accessible\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 80,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal operation. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 12,700–60,700 BTU\/hr band per the CSA B415.1-10 stack-loss method — a wide range covering shoulder-season heating on the low end and serious cold-snap output on the high end.\u003c\/p\u003e\n\n\u003cp\u003eA realistic burn cycle from a packed load of well-seasoned hardwood produces a 30–45 minute warm-up, 2–3 hours of strong sustained heat once the firebox and surrounding masonry come up to temperature, then a gradual decline over the next 3–4 hours with a coal bed remaining. Total useful heat from one full pack is realistically 6–7 hours, occasionally approaching the 8-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed.\u003c\/p\u003e\n\n\u003cp\u003eThe masonry around the insert acts as a thermal mass. Once the surrounding brick or stone is up to temperature, it continues radiating heat into the room well after the active fire has died down. This is one of the underappreciated benefits of an insert versus a freestanding stove — the masonry stores and releases heat on its own cycle. The first hour from a cold start is the slowest because that mass has to come up to temperature; once it's hot, response time is faster.\u003c\/p\u003e\n\n\u003cp\u003eThe 176 CFM heat-activated double-cage blower is what gets the heat into the room. Because most of the insert's firebox sits inside the masonry cavity, the radiant heat that would otherwise reach the room from a freestanding stove is partly absorbed by the surrounding brick. The convection jacket around the firebox captures that heat and the blower pushes it out into the room. The 176 CFM rating is the strongest in the Osburn insert line — meaningful for an insert in this size class. The rheostat lets you dial speed down for quieter operation once the room is up to temperature.\u003c\/p\u003e\n\n\u003cp\u003eWith the switch in AUTO, the blower starts automatically once the insert is hot enough and stops when it cools — set the position and forget about it. With the switch in MANUAL, the blower runs continuously regardless of insert temperature. Allow the insert to reach operating temperature (approximately one hour from a cold start) before turning the blower to MANUAL. Per the manual, turning the blower on too early during start-up pulls heat away from the firebox and slows the build-up to clean combustion.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic inserts, not specific to Osburn. The wide-format glass — largest in the Osburn insert line — makes glass cleanliness more visually important than on smaller inserts.\u003c\/p\u003e\n\n\u003cp\u003ePower-failure operation: the insert continues to burn safely without electricity — only the blower stops. Heat distribution drops noticeably without the blower because the masonry cavity absorbs most of the firebox radiation. Plan accordingly if you're buying this insert specifically as a power-outage heat source.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eLarge appliance, large masonry opening required.\u003c\/strong\u003e The 2700's minimum opening of 27 1\/8\" H × 31 3\/4\" W × 22 1\/8\" D is substantial. Many older or smaller fireplaces will not accept it — particularly the 22 1\/8\" depth requirement, which is deeper than most other inserts in the Osburn line. Measure carefully before ordering — this is the most common reason a Matrix 2700 purchase falls apart at the installation stage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEfficiency is lower than smaller siblings.\u003c\/strong\u003e 64% HHV is lower than the 68% HHV on the Osburn 1700-I and 71% HHV on the 3500-I. The Matrix 2700's standout numbers are the class-leading published emissions rate and the 80,000 BTU\/hr output, not efficiency. Buyers comparing efficiency numbers across the line should know this going in — it's a real trade-off.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLow published emissions is the headline.\u003c\/strong\u003e If emissions matter for your jurisdiction (EPA non-attainment counties, stricter local rules, future regulatory changes), the Matrix 2700's 1.2 g\/hr published average particulate emissions are class-leading among Osburn wood inserts. For many buyers this is the single best reason to pick the 2700 over the 3500-I.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePowerful blower, audible blower.\u003c\/strong\u003e The 176 CFM blower delivers strong heat distribution but is more audible than the smaller blowers on other inserts in the line. The rheostat lets you dial speed down for quieter operation when the room is up to temperature; high speed is most useful during the active heat-output phase of the burn cycle. Multiple owner reports describe the blower as noticeably loud at higher settings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower auto-activation can be finicky.\u003c\/strong\u003e A meaningful number of owner reports cite blower thermodisc activation issues — the blower failing to engage in AUTO when the insert reaches operating temperature, or running constantly regardless of switch position. The issue is usually improper thermodisc seating against the insert body during installation; have the installer verify the sensor mounting before sign-off and test all three switch positions (AUTO \/ OFF \/ MANUAL) before the installer leaves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e8-hour maximum burn is large-class, not long-burn class.\u003c\/strong\u003e A 2.5 ft³ non-cat insert gives you meaningful primary-heat capability across 1,500–2,000 sq ft, with realistic 6–7 hour burn cycles. If you want true 10+ hour overnight burns, consider a catalytic insert in this size class with a real low-output mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe 2,200 sq ft figure is aspirational.\u003c\/strong\u003e The most consistent owner regret across large inserts is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~2,000 sq ft as primary winter heat in a cold climate or older home, this insert is at its limit — supplemental heat in the coldest part of winter may still be needed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe blower is essential, not optional.\u003c\/strong\u003e Unlike a freestanding stove where the blower meaningfully improves heat distribution, on an insert the blower is what gets the heat into the room at all. Most of the firebox sits inside the masonry cavity, which absorbs radiant heat. The insert will run safely without the blower (useful in a power outage), but day-to-day heat into the room depends on the blower being on and working.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e535 lb shipping weight is heavy.\u003c\/strong\u003e Plan for three-person handling minimum and verify the installation route — stairs, narrow doorways, and tight masonry access make the install meaningfully harder than for smaller inserts. Several owner reports cite installation difficulty as the single hardest part of owning this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLiner, block-off plate, and labor are not in the appliance price.\u003c\/strong\u003e The insert is the appliance; the chimney liner, the block-off plate, the insulation wrap, and the professional installation are separate purchases that need to be planned for. Older or taller chimneys, offset flues, and damper-frame removal add to install complexity. Skipping the liner, the block-off plate, or the insulation wrap saves money up front and costs measurable performance and creosote durability after.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLarge window makes glass cleaning visible.\u003c\/strong\u003e The wide-format 24 3\/8\" × 12 5\/8\" ceramic glass is the largest in the Osburn insert line, which is a major selling point but also means low-burn glass tarring is more visually noticeable. Daily wipe during low-burn weather; weekly during high-burn.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEast-west loading only.\u003c\/strong\u003e The 12 7\/8\" firebox depth is too shallow for north-south log loading. All loading is across the width of the firebox, sides visible from the door. Less flexibility than the deeper-firebox Osburn 3500-I.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the insert doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this insert.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration is a one-time decision.\u003c\/strong\u003e Door overlay color (Black or Brushed Nickel) is configured at order, not field-swappable. Choose the configuration that matches the fireplace you're installing into.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in. Run the insert hot and expect the smell to disappear permanently after the cure-in.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e Per the manual, the recommended method is the EPA loading procedure for cleanest combustion: place two small pieces (about 3\" × 3\") in the bottom in a reverse-V shape, two medium-size pieces (about 4\" × 4\") in an east-west orientation in the back over the reverse V, and a big piece (about 5\" × 5\") in the front over the reverse V. Leave air space between pieces. Light, leave the door open for three minutes or until the fire is fully established, then close with the air control fully open. The manual also describes alternative methods (conventional bottom-up, top-down, two-parallel-logs).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Single-lever, located below the ash shelf. Push the handle to one position for HIGH (full air) and the opposite position for LOW (minimal air). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established. Closing too fast and the fire smolders. Do not elevate the fire by using a grate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower switch positions.\u003c\/strong\u003e The 176 CFM blower assembly has a three-position switch: (1) AUTO — blower starts when the insert is hot enough and stops when it cools down (thermodisc-controlled); (2) OFF — blower stopped, prevented from starting automatically; (3) MANUAL — runs continuously regardless of insert temperature. Use AUTO for normal operation; use MANUAL only when you want continuous airflow regardless of temperature. Allow the insert to reach operating temperature (approximately one hour from cold start) before turning the blower to MANUAL.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–4 hours between reloads in active heating use; up to 7 hours for a final overnight pack with the air shut hard. Rake remaining charcoal toward the front of the firebox before loading — this concentrates the coals near where most of the combustion air enters and helps ignite the new load. Place the new load on and at the back of the embers. Open the air for a minute or two before opening the door, open the door slowly to avoid smoke rollout, load, close the door, and run the air open until the load is fully engaged before reducing gradually. Turn the blower OFF before opening the door fully to reduce ash disturbance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBurn in cycles, not single-log feeds.\u003c\/strong\u003e The manual is explicit: do not attempt to produce steady heat output by placing a single log on the fire at regular intervals. Always place at least three (preferably more) pieces on the fire at a time so the heat radiated from one piece helps ignite the pieces next to it. Each load should provide several hours of heating.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCarbon monoxide watch.\u003c\/strong\u003e Per the manual, if the firebox no longer shows flame but still contains unburned logs, check outside for smoke from the chimney. Smoke without flame means the fire is air-starved and CO levels are rising. Open the door slightly, move the logs with a poker, create a passage for air by making a trench in the ember bed, and add small kindling-size pieces to restart combustion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh management.\u003c\/strong\u003e The Matrix 2700 uses a hollow-bottom firebox; ash is scooped manually from the front. Empty ash every 2–3 days during full-time heating. The best time to remove ash is in the morning after an overnight fire when the insert is relatively cool but there is still some chimney draft to draw ash dust into the insert rather than into the room. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days and releases carbon monoxide. Never store ashes indoors, in a non-metallic container, or on a wooden deck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Brown stains at the lower corners mean smoky combustion. Do not clean the glass when the insert is hot, and do not strike or slam the glass door shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor and glass gaskets.\u003c\/strong\u003e Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door. The latch mechanism is adjustable — remove the split pin with pliers and turn the handle one counterclockwise turn to increase pressure. Plan on every 3–5 seasons in regular use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney and liner should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1\/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access. Insert installations make sweeping more involved than freestanding stoves — many owners hire a CSIA-certified sweep rather than doing it themselves.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust. Vacuum dust accumulation annually. Do not oil the blower unless the manual specifically calls for lubrication. If the blower fails to engage automatically when the insert reaches operating temperature in AUTO, have the installer or dealer inspect the thermodisc mounting and contact with the insert body — improper seating is the most common cause of auto-activation issues on this insert. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefractory bricks and baffle.\u003c\/strong\u003e The intense heat of the fire can cause slight cracks in the refractory bricks — minor cracks do not reduce effectiveness. Inspect periodically and replace any wider cracks. The baffle and secondary tubes can be removed for sweep access and inspection. Operation with a cracked or missing baffle may cause unsafe temperatures and voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChimney fire response.\u003c\/strong\u003e If a chimney fire occurs: close the insert door and the air-intake control, alert occupants, contact the fire department if assistance is needed, use a dry chemical fire extinguisher or baking soda or sand to control the fire (never water — it causes a dangerous steam explosion), and do not use the appliance again until the insert and chimney have been inspected by a qualified chimney sweep or fire-department inspector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney. Do not burn compressed logs made of wax-impregnated sawdust or logs with chemical additives; 100% compressed-sawdust logs can be used with caution.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects, convector air-mate\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eRemovable carbon-steel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this insert and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, and blower are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Destination 2.7 Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eEnerzone-branded sibling on the same SBI 2700 chassis. Same 2.5 ft³ firebox, same 80,000 BTU\/hr maximum, same 20-inch log capacity, same 176 CFM blower, same 64% HHV efficiency, same 1.2 g\/hr published emissions, same 8-hour burn time, same minimum masonry opening, same warranty schedule. The difference is aesthetic and brand tier: the Matrix 2700 carries the Osburn cast-iron finish with the configurable door overlay (Black or Brushed Nickel); the Destination 2.7 features the Enerzone louvered cast-iron faceplate without the door-overlay configurability. Choose the Matrix 2700 for the Osburn finish detailing and door-overlay customization; choose the Destination 2.7 for the louvered Enerzone styling at the Enerzone price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 1700-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-down sibling in the Osburn insert line. 1.86 ft³ firebox, 65,000 BTU\/hr maximum, 500–1,800 sq ft heating range, 18-inch log capacity, 7-hour maximum burn, 144 CFM blower, 68% HHV efficiency. Much smaller masonry opening required (21 1\/2\" × 27 1\/2\" × 12 7\/8\") — fits openings the Matrix 2700 won't. Configurable Regular\/Large faceplate in Black or Brushed Nickel plus configurable door overlay. Choose the 1700-I for shallower masonry openings, smaller spaces, or higher efficiency in a smaller insert; choose the Matrix 2700 for the larger firebox, more powerful blower, larger viewing window, and class-leading emissions.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn 3500-I Wood Insert\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eStep-up sibling in the Osburn insert line. Larger 3.5 ft³ firebox, 110,000 BTU\/hr maximum, 1,000–2,700 sq ft heating range, 22-inch log capacity, 10-hour maximum burn, 71% HHV efficiency, 1.6 g\/hr emissions, 144 CFM blower. Loads over both width and depth (the deepest firebox in the Osburn insert line at 20 1\/8\"). Smaller minimum masonry depth (18 3\/8\" vs the Matrix 2700's 22 1\/8\") but larger width requirement (31\"). Choose the 3500-I for primary heat above 2,200 sq ft, longer log capacity, north-south loading flexibility, and longer burn cycles; choose the Matrix 2700 for the larger viewing window, cleaner-burning emissions, and more powerful blower in a slightly smaller firebox class.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy Summit Insert LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eCross-brand competitor in the same size class. Comparable firebox volume and heating capacity, Pacific Energy's well-regarded sealed-firebox technology with single-lever non-cat operation, premium build, higher price. The most common cross-shop with the Matrix 2700 for buyers weighing premium Pacific Energy fit-and-finish against the SBI dealer\/parts accessibility and the Osburn price point.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eThe Matrix 2700 is the Osburn cast-iron sibling of the Enerzone Destination 2.7 — same chassis, same heat output, same install, same class-leading published emissions. What you're buying is the Osburn finish detailing, the configurable cast-iron door overlay, and the largest viewing window in the Osburn insert line. If those matter to the room, and the masonry opening is big enough to take it, this is the right one.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black","offer_id":49277073850561,"sku":"OB02700+OA10253","price":4729.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel","offer_id":49277073883329,"sku":"OB02700+OA10254","price":5004.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-matrix-2700-wood-insert-front-ob02700.webp?v=1748289625"},{"product_id":"osburn-2500-pellet-stove","title":"Osburn 2500 Pellet Stove","description":"\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; 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}\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231f20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\u003cdiv class=\"km-desc\"\u003e\n\u003cp class=\"lede\"\u003eA freestanding top-feed pellet stove with electronic ignition, 60 lb hopper, thermostatic control, and 17 1\/4\" × 9 1\/2\" ceramic glass. EPA \/ CSA B415.1-10 tested at 70.3% HHV efficiency and 0.96 g\/hr emissions — among the cleanest-burning pellet stoves in its category. 500–2,000 sq ft heating area, 6,648–28,540 BTU\/hr tested output, up to 51-hour maximum burn on a full hopper at low setting. Approved for both alcove and mobile-home installation (US and Canada). Ships as a single configuration; no buyer-configurable choices at order.\u003c\/p\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 800 and 1,800 sq ft who want a freestanding wood-pellet heating appliance with the convenience of automatic ignition, thermostatic control, and 24+ hour unattended burn cycles — not the hands-on operation of a wood stove.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a meaningfully cleaner-burning pellet appliance than the median in the category. The Osburn 2500's 0.96 g\/hr particulate emissions is well below the EPA pellet stove limit of 2.0 g\/hr and roughly 1\/3 the emissions of the larger Osburn 3000 (2.9 g\/hr). For buyers in EPA non-attainment counties or HOA-restricted neighborhoods, this matters.\u003c\/p\u003e\n\u003cp\u003eOwners of small homes, manufactured homes, mobile homes, or alcove installations. The 2500 is approved for both alcove and mobile-home installations in the US and Canada — uncommon dual approval that opens installation locations many other appliances can't serve. Tight clearances (3\" back wall, 6\" side wall) reflect the cool exhaust and contained combustion of pellet appliances generally and this model's compact thermal envelope specifically.\u003c\/p\u003e\n\u003cp\u003eBuyers replacing an older pellet stove, or first-time pellet stove buyers stepping over from a wood stove or oil\/propane appliance who want a simpler operating experience. Thermostatic control plus the optional digital wall thermostat (AC05558) lets the stove cycle on heat demand like a furnace — load the hopper, set the thermostat, walk away.\u003c\/p\u003e\n\u003cp\u003eBuyers who can accept that a pellet stove requires household electricity to operate. Pellet stoves use mechanical draft (combustion blower, exhaust blower, auger motor) and have no manual operating mode — when the power is out, the stove is off. Buyers in regions with frequent multi-day outages should plan for a battery backup or generator, or choose a wood-burning appliance.\u003c\/p\u003e\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers who want a wood-burning experience. Pellet stoves burn manufactured wood pellets, not cordwood. The visual is a contained flame inside a burn pot, not a stacked-log fire. If the aesthetic of wood is a primary requirement, look at a freestanding wood stove (Osburn 1700, 2000, or Matrix 2700) instead.\u003c\/p\u003e\n\u003cp\u003eNot for buyers heating more than ~1,800 sq ft as primary winter heat. The 2,000 sq ft figure on the manufacturer's range is aspirational; for primary heat in larger spaces, step up to the Osburn 3000 (2,200 sq ft, larger heat output) or look at higher-capacity pellet stoves with bottom-feed combustion for sustained high-output operation.\u003c\/p\u003e\n\u003cp\u003eNot for buyers in regions with frequent or extended power outages who don't have backup power. Without electricity, the auger, igniter, combustion blower, and exhaust blower do not operate — the stove will not run. Wood appliances are the right choice for off-grid or unreliable-grid scenarios.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting a silent appliance. The Osburn 2500 operates at 47–60 dBa at 6 feet per manufacturer spec. Multiple owner reviews flag the blower as audible. Compared to a furnace, this is normal pellet-stove operating sound; compared to a silent wood stove, it is a real difference. Sit near a running pellet stove at a dealer before purchase if quiet operation is a priority.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who don't have a reliable supplier of premium-grade wood pellets. Pellet quality directly drives stove performance and maintenance cadence — high-ash pellets clog the burn pot, high-moisture pellets cause ignition failures. Verify local pellet supply (and storage space for off-season buying) before committing to a pellet appliance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cdiv class=\"spec-list\"\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAppliance type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eFreestanding pellet stove\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eFreestanding solid-fuel heating appliance burning manufactured wood pellets. Connects to a 3-inch Type L pellet vent system; no Class A chimney required. Approved for installation on a hearth pad or modular floor protection in residential, manufactured, mobile-home, and alcove locations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eTop-feed\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePellets feed into the burn pot from above via an auger. Top-feed combustion is simpler and quieter than bottom-feed but more sensitive to pellet quality — high-ash or low-grade pellets can crust the burn pot and require more frequent cleaning. For premium-grade pellets, top-feed runs reliably. For higher-ash pellets, consider the bottom-feed Osburn 3000.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFuel type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003ePremium-grade wood pellets\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePremium grade or better, ash content 1% or lower, certified by the pellet manufacturer (PFI, ENplus, or CANplus certification on the bag). Burning lower-grade pellets, corn, or any other fuel violates the certification, voids the warranty, and damages the appliance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e500–2,000 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 800–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, pellet quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat input rate\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e39,260 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eMaximum fuel energy input at peak burn rate (4.7 lb\/hr). Heat output to the room is lower than heat input — see tested output range below for the realistic operating band.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6,648–28,540 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around. The thermostatic control cycles the stove between low and high output to match heat demand from the room.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e70.3% HHV \/ 75.8% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e78.4% LHV optimum efficiency at the specific burn rate; 73% HHV optimum heat-transfer efficiency. Higher than most wood-burning appliances at comparable output because pellet combustion runs cleaner and more controlled. HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e0.96 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTested at 0.96 g\/hr per CSA B415.1-10 by an independent accredited laboratory — well below the EPA pellet stove limit of 2.0 g\/hr and among the cleanest-burning pellet stoves in its category. Roughly 1\/3 the emissions of the larger Osburn 3000 (2.9 g\/hr).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage CO emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e7.6 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAverage carbon monoxide emissions per CSA B415.1-10 stack-loss method. Substantially lower than wood-burning appliances at comparable output (typically 60–160 g\/hr) — a structural advantage of pellet combustion's controlled fuel\/air ratio.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHopper capacity\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e60 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eHolds approximately one and a half standard 40-lb pellet bags. Reload cadence depends on burn rate — at the lowest setting, the hopper supports up to 51 hours; at high output, expect to reload every 12–18 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 51 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eFrom a full 60-lb hopper at the lowest burn rate (1.2 lb\/hr) per manufacturer spec. Useful continuous operation. At high burn rate (4.7 lb\/hr) the same hopper lasts approximately 12 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBurn rate\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.2–4.7 lb\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePellet consumption rate range across all six heat settings. At 4 lb\/hr in active heating use, a 40-lb bag burns in roughly 10 hours; a ton of pellets (40 bags) lasts roughly 400 hours of continuous operation, or about three months at typical residential cycling.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eIgnition\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eElectronic igniter\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAutomatic electronic ignition. No fire starter, kindling, or match required. Press the start button on the control panel or use the optional digital wall thermostat (AC05558); the auger feeds pellets to the burn pot, the igniter heats up, the pellets ignite, and the combustion blower establishes draft. Cold start to operating temperature in approximately 8–12 minutes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eControls\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eElectronic with thermostatic control\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuilt-in electronic control panel with six heat intensity levels and adjustable convection air speed (AUX button). Compatible with the optional digital wall thermostat (SBI AC05558) for remote-mounted thermostatic operation — the stove cycles on\/off based on room temperature demand, like a furnace.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSteel body, cast-iron-framed glass door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded steel body with thermosetting powder paint finish, stainless-steel heat exchangers, stainless-steel baffle, and single cast-iron-framed ceramic glass viewing door. German-made ceramic glass. Limited lifetime warranty on the combustion chamber.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e17 1\/4\" × 9 1\/2\", ceramic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eViewable glass surface, per Osburn's official spec. Ceramic glass with air-wash system, tested for high-temperature operation. Wider glass than the larger Osburn 3000 (13 3\/8\" × 7 3\/4\") — the 2500's wide horizontal viewing area is one of its visual signatures.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e3 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eType L pellet vent, double-wall stainless interior with galvanized outer wall. Vent must comply with ULC\/ORD-C441 or CAN\/ULC S609 (Canada) or UL 641 (US). Direct-vent or horizontal-vent capable — pellet stoves do not require a vertical Class A chimney. Approved vent paths include through-the-wall horizontal termination, vertical roof termination, or stainless liner inside an existing masonry chimney.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion noise\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e47–60 dBa at 6 ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer-published noise level range at 6 feet from the appliance. Quieter end is low burn \/ low convection; louder end is high burn with maximum convection blower speed. Audible but not loud — comparable to a quiet conversation or a soft kitchen exhaust fan. Some owner reviews flag the blower as noisy at higher settings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e25 7\/8\" W × 30\" D × 33\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCompact freestanding footprint. Adjustable threaded legs allow leveling on uneven floors. Plan for hearth pad or modular floor protection extending 18 inches in front in Canada (6 inches in the US) plus 8 inches at the back and sides in Canada (or beyond door-opening width by 6 inches each side in the US).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e286 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eConsiderably lighter than most wood-burning freestanding stoves at this output. Plan for two-person handling at delivery.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes (US and Canada)\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for installation in manufactured and mobile homes in both the US and Canada per manufacturer listing. Fresh-air intake (SBI AC02092 or AC01240) is mandatory for mobile-home installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAlcove approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eYes\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for alcove installation — meaning the stove may be installed in a recessed wall section with combustible side walls at the published clearance distances. Uncommon among solid-fuel appliances. Verify alcove dimensions and ceiling requirements with installer and AHJ.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eElectrical\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e120 VAC \/ 60 Hz\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eStandard household 120 V outlet. Continuous operation draws 1.3–2.5 A (140 W) depending on heat setting; ignition cycle draws 2.6 A (312 W) for the first few minutes of cold start. Main control board uses 8 A \/ 250 V fuses. Do not use a GFCI receptacle (per the manufacturer FAQ — GFCI trips can shut down the appliance unnecessarily).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandards\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUL 1482 \/ ASTM E1509, ULC S627, EPA \/ CSA B415.1-10\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSafety standards UL 1482 and ASTM E1509 (USA), ULC S627 (Canada). Emissions standards EPA (USA) and CSA B415.1-10 (Canada). Tested and listed by an accredited laboratory (CAN\/USA).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003eThe Osburn 2500 is designed for installation in a permitted residential space — a living room, family room, basement, finished workshop, manufactured home, or mobile home with adequate electrical service and a vent path to the exterior. Approved for both alcove and mobile-home installations in the US and Canada per the manufacturer listing — uncommon dual approval that opens installation locations many other solid-fuel appliances can't serve.\u003c\/p\u003e\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eCanada\u003c\/span\u003e\u003cspan\u003eUSA\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBack wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCorner\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSide wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e6\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop (platform to ceiling)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e48\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e48\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 14px;\"\u003eTight clearances compared to wood-burning freestanding stoves — a function of cool pellet exhaust and contained combustion. The certification label on the unit is the binding clearance for any installation and always overrides clearance figures published in any other media. Confirm the binding clearance figures with your installer before purchase.\u003c\/p\u003e\n\u003ch3\u003eFloor protection \/ hearth pad\u003c\/h3\u003e\n\u003cp\u003eA non-combustible floor protector is required under and around the appliance unless the existing floor is already non-combustible (concrete, slate, etc.). In Canada, the floor protector must extend at least 18 inches in front of the door opening and at least 8 inches at the back and on each side of the appliance. In the US, the floor protector must extend at least 6 inches in front of the door opening and extend at least 6 inches beyond each side of the door opening. Minimum thickness 0.015 inches (0.38 mm). The manufacturer offers pre-sized options including the Black Steel Hearth Pad in 41 1\/4\" × 44\" (AC02709B), 46 3\/4\" × 54\" (AC02788), and 54\" corner (AC02789); tempered glass options (AC02704, AC02757); and the modular floor protection system 54\" × 46 3\/4\" (AC02711) for buyers wanting a coordinated finished look.\u003c\/p\u003e\n\u003ch3\u003eVent system\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 2500 vents through a 3-inch Type L pellet vent — not a wood-burning chimney. Pellet vent is double-wall stainless steel inside with galvanized outer wall, certified to ULC-S609M \/ ORD-C441 in Canada or UL 641 in the US. Vent path can be horizontal (through-the-wall termination), vertical (through-the-roof termination), or run through an existing masonry chimney with a stainless steel liner inside it. Do not install a flue damper in a pellet vent system. Do not connect a pellet vent to any other appliance's venting system.\u003c\/p\u003e\n\u003cp\u003eFor installations at high elevation or with long vertical runs, a 4-inch vent may be required — verify with installer and manufacturer spec. The 2\" × 25' anti-static flex hose (SBI AC01465) is sold separately for specific routing scenarios.\u003c\/p\u003e\n\u003ch3\u003eOutside air intake\u003c\/h3\u003e\n\u003cp\u003eA fresh-air intake is not mandatory in all installations but is required for mobile-home installations and strongly recommended for tight new-construction homes with mechanical ventilation, for homes with powerful range hoods or other mechanical exhaust appliances, and where local code requires it. The 3\" × 10' insulated flex pipe (SBI AC02092) and 3\" × 5' fresh air intake kit (SBI AC01240) are sold separately for buyers configuring outside-air installations.\u003c\/p\u003e\n\u003ch3\u003eElectrical and power supply\u003c\/h3\u003e\n\u003cp\u003eThe Osburn 2500 requires a continuous 120 VAC household supply. Continuous operation draws 1.3–2.5 A (140 W); ignition cycle draws 2.6 A (312 W) for the first few minutes of cold start. Use a properly grounded 3-prong outlet on a dedicated circuit if possible. The manufacturer does NOT recommend GFCI receptacles — GFCI trips can shut down the appliance unnecessarily and disrupt operation. Plan for an uninterruptible power supply (UPS) or battery backup if the appliance is the primary heat source in an outage-prone region.\u003c\/p\u003e\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance.\u003c\/p\u003e\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003ch3\u003eShips with the stove\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOsburn 2500 freestanding pellet stove with welded steel body, single cast-iron-framed ceramic glass door, and stainless-steel heat exchangers\u003c\/li\u003e\n\u003cli\u003e60 lb integrated hopper with top-feed auger system and electronic igniter\u003c\/li\u003e\n\u003cli\u003eCombustion blower, convection blower, and integrated electronic control panel with six heat settings and adjustable convection speed\u003c\/li\u003e\n\u003cli\u003eStainless-steel baffle and adjustable threaded legs for leveling on uneven floors\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 3-inch Type L pellet vent system — pellet vent components from a listed manufacturer; required vent path is sold separately\u003c\/li\u003e\n\u003cli\u003eFloor protector or hearth pad sized to manual specifications — manufacturer options include Black Steel Hearth Pad 41 1\/4\" × 44\" (SBI AC02709B), 46 3\/4\" × 54\" (SBI AC02788), 54\" corner (SBI AC02789); Tempered Glass Hearth Pad 44\" × 36\" (SBI AC02704); Tinted Tempered Glass Hearth Pad 44\" × 36\" (SBI AC02757); Modular Floor Protection System 54\" × 46 3\/4\" (SBI AC02711)\u003c\/li\u003e\n\u003cli\u003eOptional Digital Wall Thermostat (SBI AC05558) — remote-mounted thermostatic control; the stove cycles on\/off based on room temperature demand\u003c\/li\u003e\n\u003cli\u003eOptional Hopper Extension (SBI AC01393) — increases hopper capacity beyond the standard 60 lb for longer unattended burn cycles\u003c\/li\u003e\n\u003cli\u003eOptional Storage Tank with Pneumatic Self-Feeding Pellet System (SBI AC01460) — bulk pellet storage with automatic feed to the stove; for buyers who want furnace-like multi-day unattended operation\u003c\/li\u003e\n\u003cli\u003eOptional Storage Tank Extension (SBI AC01462) — adds capacity to the AC01460 storage tank\u003c\/li\u003e\n\u003cli\u003eOptional Stand Alone Auxiliary Discharge Tank (SBI AC01463) and Leg Assembly (SBI AC01464) — auxiliary pellet handling for bulk storage installations\u003c\/li\u003e\n\u003cli\u003eOptional 2\" × 25' Anti-Static Flex Hose (SBI AC01465) — for specific vent routing scenarios\u003c\/li\u003e\n\u003cli\u003eOptional 3\" × 10' Insulated Flex Pipe for fresh air intake (SBI AC02092) and 3\" × 5' Fresh Air Intake Kit (SBI AC01240) — required for mobile-home installations, recommended for tight homes\u003c\/li\u003e\n\u003cli\u003eOptional 3\" Pellet Stove Cleaning Kit (SBI AC02712) — sweep brushes and rod for vent maintenance\u003c\/li\u003e\n\u003cli\u003e3\" Round Pellet Stove Brush (SBI AC04505), 4\" Round Pellet Stove Brush (SBI AC04506), 5' Pellet Stove Flexible Rod (SBI AC04510) — individual cleaning components\u003c\/li\u003e\n\u003cli\u003ePellet Appliance Glass Cleaner (SBI AC07827) and Dry Cleaning Pad (SBI AC07824) — glass and component cleaning\u003c\/li\u003e\n\u003cli\u003eOptional Certified Modular Heat Shield System 53\" × 58 1\/2\" (SBI AC02762) and Heat Shield Extension (SBI AC02713) — for installations requiring additional wall shielding\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003cli\u003eBattery backup or UPS — strongly recommended in regions with frequent power outages if the stove is the primary heat source\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003eThe 39,260 BTU\/hr maximum is a heat input rating based on the peak burn rate of 4.7 lb\/hr and a dry pellet energy value of 8,600 BTU\/lb. Heat output to the room is lower than heat input — the realistic operating band is 6,648–28,540 BTU\/hr per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\u003cp\u003eA realistic operating day, primary-heat use, cold climate: thermostat set to desired room temperature, stove cycles between heat levels 1–6 based on demand. In a well-insulated 1,500 sq ft home in moderate winter, the stove typically runs at heat levels 2–3 during the day and 3–4 at night, with the convection blower at low to medium speed. A full 60-lb hopper supports 18–24 hours of continuous heating at this load.\u003c\/p\u003e\n\u003cp\u003eThe 0.96 g\/hr particulate emissions figure is the standout spec on this appliance. Less than half the EPA pellet stove limit of 2.0 g\/hr. Roughly one-third the emissions of the larger Osburn 3000 (2.9 g\/hr). For buyers in EPA non-attainment counties, in HOA jurisdictions with emissions restrictions, or simply paying attention to clean-burn metrics independent of regulatory minimums, this is a meaningful number.\u003c\/p\u003e\n\u003cp\u003ePellet stoves throw heat differently than wood stoves. The convection blower pushes warm air horizontally into the room — heat distribution is more directional and less radiant than a freestanding wood stove. Buyers replacing a wood stove with a pellet stove sometimes report the \"feel\" of the heat as different, even at comparable BTU output. The optional digital wall thermostat (AC05558) lets the appliance run like a furnace — set and forget.\u003c\/p\u003e\n\u003cp\u003eThe 51-hour maximum burn time is achieved at the lowest setting (1.2 lb\/hr) on a full hopper. Useful continuous operation at low setting. At realistic heat-demand levels for primary winter heat (3.0–4.0 lb\/hr), expect reload cadence of 15–20 hours per full hopper.\u003c\/p\u003e\n\u003cp\u003eThe 70.3% HHV average efficiency is higher than most wood-burning freestanding stoves at comparable output — a structural advantage of pellet combustion's controlled fuel-air ratio. The 78.4% LHV optimum at the specific test burn rate is competitive with mid-tier catalytic wood appliances. HHV is the federal standard.\u003c\/p\u003e\n\u003cp\u003eThe CO emissions figure of 7.6 g\/hr is dramatically lower than wood-burning freestanding stoves at comparable output (typically 60–160 g\/hr) — again, a function of controlled pellet combustion. For buyers concerned about indoor and outdoor air quality, pellet appliances generally outperform wood appliances on this metric, and the 2500 is at the low end of the pellet category.\u003c\/p\u003e\n\u003cp\u003eThe glass air-wash system keeps the ceramic viewing window largely clear during normal operation. Buyers should expect to wipe the glass weekly with the manufacturer's pellet appliance glass cleaner (AC07827) or a dry cleaning pad (AC07824); pellet combustion produces less creosote staining than wood combustion but still leaves a fine ash film on the glass over time.\u003c\/p\u003e\n\u003cp\u003eMultiple owner reviews flag the blower fan as noisy, especially at higher settings. The published 47–60 dBa range at 6 feet is realistic — at low settings the appliance is genuinely quiet, but at high settings the convection blower is clearly audible. Sit near a running unit at a dealer before purchase if quiet operation is a priority.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eSingle SKU, no buyer choices at order.\u003c\/strong\u003e The Osburn 2500 ships as one configuration. No faceplate options, no door overlay choices, no louver styles. What you see in the manufacturer image is the appliance you receive. Customization is limited to where you place it and what hearth pad and venting you specify.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTop-feed combustion is pellet-quality sensitive.\u003c\/strong\u003e Top-feed pellet stoves drop pellets into the burn pot from above; the residue accumulates and can form a crust if the pellets have ash content above 1%. Premium-grade pellets run reliably; lower-grade pellets require more frequent burn-pot cleaning and can cause shutdowns. For higher-ash pellets, consider the bottom-feed Osburn 3000 (which pushes residue out of the burn area as fuel consumes).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePellet stoves need electricity to operate.\u003c\/strong\u003e The auger motor, combustion blower, exhaust blower, and electronic igniter all require 120 V AC. No power means no heat — there is no manual operating mode. Buyers in regions with frequent multi-day outages should plan for battery backup, UPS, or a generator, or choose a wood-burning appliance for off-grid resilience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlower noise is real.\u003c\/strong\u003e The 47–60 dBa published range at 6 feet is honest. At low settings the appliance is genuinely quiet. At high settings the convection blower is clearly audible — comparable to a quiet bathroom exhaust fan. Multiple owner reviews flag this. If you're sensitive to mechanical sound, sit near a running unit at a dealer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePellet supply and storage are buyer responsibilities.\u003c\/strong\u003e A pellet appliance requires a reliable supplier of premium-grade pellets, ideally bought by the ton and stored dry. Off-season buying (spring\/summer) is cheaper than peak-season buying. A ton of pellets occupies approximately 50 cubic feet and weighs 2,000 lb — plan for garage, basement, or shed storage space that stays dry. Pellets stored in damp conditions absorb moisture and burn poorly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot a wood-burning aesthetic.\u003c\/strong\u003e The flame is contained inside a burn pot — visible through the wide glass, but constrained in size and shape compared to the stacked-log fire of a wood appliance. Some buyers love this aesthetic; some buyers want the wood fire experience and feel let down by the pellet flame. Visit a dealer with a running stove before purchase if the aesthetic matters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAsh needs regular handling.\u003c\/strong\u003e Pellet combustion produces fine ash that accumulates in the burn pot and ash pan. Daily inspection of the burn pot during continuous use; weekly cleaning of the ash pan, glass, and combustion blower fins; monthly or quarterly cleaning of the heat exchanger and vent system depending on usage. Less ash than a wood stove, but not maintenance-free.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnnual professional service is the right cadence.\u003c\/strong\u003e Pellet stoves have moving parts (auger motor, blowers, igniter) that benefit from annual technician inspection and service. Plan for an annual service call as part of operating budget.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReplacement parts and consumables.\u003c\/strong\u003e Plan for igniter replacement every 3–5 seasons depending on usage (the igniter is a heating element that cycles every cold start). Blower replacement, gasket replacement, and burn pot replacement are normal maintenance items over the life of the appliance. The SBI parts network is well-stocked; replacement components are openly available through dealers and parts vendors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\"Heat input\" not \"heat output\" on the headline BTU rating.\u003c\/strong\u003e The 39,260 BTU\/hr peak figure is the fuel energy input rate, not the heat delivered to the room. Heat output is 6,648–28,540 BTU\/hr per the CSA stack-loss test. Pellet stove specs sometimes confuse buyers comparing to wood stove \"max heat output\" numbers — make the comparison on tested output, not headline rating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eFirst fires.\u003c\/strong\u003e The first one or two operating cycles release paint VOCs as the thermosetting powder paint cures. Ventilate the room well. Avoid prolonged exposure. The smell disappears after the first several hot operating cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStarting the stove.\u003c\/strong\u003e Press AUGER first if the stove is out of pellets or starting for the season — this fills the auger with pellets so the burn pot receives fuel immediately on ignition. Then press the start button on the control panel (or trigger via the optional digital wall thermostat AC05558). The stove ignites automatically — no kindling, no fire starter, no match. Cold start to operating temperature in approximately 8–12 minutes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHopper loading.\u003c\/strong\u003e The 60-lb hopper accepts pellets directly from the bag through the top opening. Pour the bag slowly to avoid spilling fines (the fine dust at the bottom of pellet bags). Keep fines out of the hopper if possible — they can affect feed consistency. Some operators sift pellets through a kitchen colander before loading to remove fines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDaily inspection.\u003c\/strong\u003e Check the burn pot for ash buildup; if a crust is forming, scrape it loose with the supplied tool. Check the glass for ash film; wipe if needed. Check the hopper level and refill as needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeekly maintenance.\u003c\/strong\u003e Empty the ash pan. Clean the glass with pellet appliance glass cleaner (AC07827) or a damp cloth — never abrasive scrubbers, never strong chemical cleaners. Brush out the burn pot completely. Check the combustion blower fins for ash buildup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonthly maintenance.\u003c\/strong\u003e During heavy heating season, brush out the heat exchanger tubes using the threaded heat exchanger rod (a service tool that comes with the appliance). This is important — clogged heat exchanger tubes reduce efficiency and increase fuel consumption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnnual service.\u003c\/strong\u003e Have an authorized technician inspect and service the appliance once per year before heating season. The annual service includes vent system inspection, gasket inspection, blower service, electronic control board check, and igniter test. Annual service is a significant predictor of appliance longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVent cleaning.\u003c\/strong\u003e The vent system should be checked at least twice a year for soot and creosote buildup per the manual. Pellet vent runs cooler than wood-burning chimney, so creosote formation is much lower, but the vent still accumulates fine ash and fly ash that needs to be cleared. The 3\" pellet stove cleaning kit (SBI AC02712) is the manufacturer-supplied tool kit for this.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePellet storage.\u003c\/strong\u003e Store pellets in their original sealed bags in a dry location. Pellets that absorb moisture swell, lose their binders, and burn poorly. A garage or shed is fine if dry; a damp basement is not. Plan for storage of at least one heating season's pellets (typically 3–5 tons for a primary-heat installation).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower outage handling.\u003c\/strong\u003e When AC power is lost, the stove shuts down. The combustion blower stops, the auger stops, the igniter cools. If the outage is brief (under an hour), the stove will restart automatically when power returns and will resume operation. If the outage extends, the stove will need to cool fully before restart; clear any unburned pellets from the burn pot before relighting. For primary-heat installations in outage-prone regions, a battery backup or UPS is strongly recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFuel quality.\u003c\/strong\u003e Burn only premium-grade wood pellets with ash content 1% or lower. Burning corn, other biomass, non-certified pellets, or wet pellets is prohibited by the manufacturer, voids the warranty, and damages the appliance. Look for PFI Premium, ENplus A1, or CANplus Premium certification on the bag.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlower management.\u003c\/strong\u003e Adjust the convection blower speed (AUX button) to balance heat distribution against noise. Lower convection speed pushes heat slowly out of the front of the stove and runs quieter; higher convection speed throws heat farther into the room and runs louder. Find the right balance for your space and noise tolerance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual: no corn, no non-pellet biomass, no cardboard, no paper, no wood scraps, no painted wood, no treated wood, no garbage. Pellet appliances are certified for one fuel only — premium-grade wood pellets. Burning anything else damages the appliance and voids the warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHeat exchanger, baffle, body components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eDoor handle assembly, glass retainers, control panel hardware\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSteel body components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eAuger motor, combustion blower, exhaust blower, convection blower, igniter, electronic control board, thermodiscs, wiring\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, burn pot, ash pan, refractory components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than premium-grade wood pellets, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, fuel quality issues, power surges, downdrafts, or venting problems is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this stove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement augers, blowers, igniters, gaskets, glass, control boards, and venting components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eHarman P43\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand pellet stove from Harman (Hearth \u0026amp; Home Technologies, USA). 1,500 sq ft maximum heating area, 41,180 BTU\/hr maximum, 46 lb hopper, 28-hour maximum burn at low setting, 84% efficiency claim, 1.6 g\/hr particulate emissions, push-button electronic ignition, integrated thermostatic control, Harman ESP (auto-feed) technology. Harman has a strong reputation for build quality, pellet flexibility (handles a wider range of pellet grades than top-feed competitors), and dealer service network in the US. Significantly higher purchase price than the Osburn 2500. Choose the Harman P43 for the Harman brand reputation, ESP fuel-flexibility technology, and the established US dealer network; choose the Osburn 2500 for the larger 60 lb hopper, longer burn time, lower emissions (0.96 g\/hr vs 1.6 g\/hr), larger glass viewing area, and substantially lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eCastle Serenity 12327\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eBudget pellet stove from Castle (US import). 1,500 sq ft maximum heating area, 31,000 BTU\/hr maximum, 40 lb hopper, smart-controller thermostatic operation, 75% efficiency claim, 2.0 g\/hr particulate emissions (at the EPA limit), 215 lb shipping weight, 17 5\/8\" W footprint. Significantly lower purchase price than the Osburn 2500 — typically half the cost. Choose the Castle Serenity for the lower entry price, smaller compact footprint, and basic pellet-heating functionality; choose the Osburn 2500 for substantially lower emissions, longer burn time, larger hopper, larger glass viewing area, alcove and mobile-home approvals (Castle Serenity is not alcove-approved), heavier-gauge construction, and SBI's parts and dealer network.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnglander 25-PDVC\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eWorkhorse cross-brand pellet stove from Englander (US Stove Company, USA). 2,000 sq ft maximum heating area, 40,000 BTU\/hr maximum, 40 lb hopper, manually-adjusted feed rates (no thermostatic auto-cycling), 86% efficiency claim, 1.9 g\/hr particulate emissions, top-feed combustion, 250 lb shipping weight. Long-standing budget-friendly pellet stove with a strong reputation for reliability and parts availability through Home Depot and similar retailers. Choose the Englander 25-PDVC for the established budget-friendly track record and parts availability through big-box retail; choose the Osburn 2500 for thermostatic control with the optional digital wall thermostat, substantially lower emissions (0.96 g\/hr vs 1.9 g\/hr), longer burn time, larger hopper, alcove and mobile-home approvals, and SBI dealer support.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cp class=\"pull\"\u003eA clean-burning pellet stove with thermostatic control, alcove and mobile-home approvals, and tested emissions at 0.96 g\/hr — among the lowest in the SBI pellet lineup. Load the hopper, set the thermostat, walk away — and check the burn pot daily. For buyers who want pellet convenience and the cleanest combustion they can buy without crossing into premium-brand pricing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Default Title","offer_id":49277093052609,"sku":"OP00025","price":4599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-2500-pellet-stove-front-ob00025.webp?v=1748292191"},{"product_id":"osburn-stratford-ii-wood-fireplace","title":"Osburn Stratford II Wood Fireplace","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; 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}\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 2.5 ft³ zero-clearance wood-burning fireplace with double cast-iron-framed glass doors, an included 176 CFM blower, included cast-iron andirons, 20-inch east-west log capacity, and 22 1\/4\" × 12 1\/2\" ceramic glass. EPA 2020 cordwood certified at 64% HHV efficiency and 1.2 g\/hr emissions — meaningfully below the larger Horizon (1.6 g\/hr) and the Everest III (1.9 g\/hr) — with up to 8-hour maximum burn and 80,000 BTU\/hr peak output. 6-inch chimney, smaller chase footprint than the larger Horizon. Built into a new or properly rebuilt framed chase as primary or supplemental heat for moderately to well-insulated homes in the 1,200–1,800 sq ft real-world range. Two buyer-configurable choices at order: faceplate style (Traditional default or Modern upgrade) and door overlay (Black default or Brushed Nickel upgrade).\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 1,200 and 1,800 sq ft who want a built-in wood-burning fireplace with timeless styling, double cast-iron-framed glass doors, and meaningfully lower particulate emissions than the larger Horizon or the Everest III. The Stratford II is the smaller of Osburn's premium mid-tier wood fireplaces — for buyers who don't need the Horizon's 4.28 ft³ firebox but want serious EPA 2020 heating capability and refined cast-iron design.\u003c\/p\u003e\n\u003cp\u003eNew-construction buyers framing a fireplace chase from scratch per the install manual's dimensions, OR substantial-renovation buyers replacing an aging factory-built prefab fireplace where the existing chase framing and chimney can be verified or rebuilt to meet the Stratford II's specific requirements. Replacement is not a drop-in: the old prefab unit must come out completely, the old chimney must be removed or replaced with an approved 6-inch UL 103 HT \/ ULC S629 system, and the existing chase framing must meet the published framing dimensions and clearances or be rebuilt to meet them. The Stratford II is a zero-clearance fireplace — it ships with listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase when the manual's framing dimensions, clearances, air spaces, chimney system, and finish-material requirements are followed.\u003c\/p\u003e\n\u003cp\u003eBuyers who want at-order configurability on two real design choices. Faceplate style: Traditional (default — classic louvered cast-iron faceplate) or Modern (upgrade — clean horizontal lines for contemporary interiors). Door overlay: Black (default — matches a stove-iron aesthetic) or Brushed Nickel (upgrade — adds a metallic accent that warms the room). The combination of choices substantially changes the appliance's visual character.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the included cast-iron andirons. Many wood fireplaces in this category sell andirons as a separate accessory; the Stratford II ships with them as standard. The andirons keep logs lifted off the firebox floor for better air circulation and combustion, and they add a classic wood-fireplace aesthetic to the fire.\u003c\/p\u003e\n\u003cp\u003eBuyers who want lower particulate emissions than the larger Osburn wood fireplaces. 1.2 g\/hr is meaningfully below the 1.6 g\/hr of the larger Horizon and the 1.9 g\/hr of the Everest III, and well below the 2.5 g\/hr EPA 2020 cordwood limit. For buyers in EPA non-attainment counties or HOA-restricted jurisdictions, the emissions margin matters. Buyers seeking even lower published particulate emissions may compare the Stratford II with Osburn's Everest II, which is listed at 0.99 g\/hr.\u003c\/p\u003e\n\u003cp\u003eBuyers who want forced-air heat distribution to a remote room. The optional Forced Air Kit redirects heat through insulated 6-inch flex ducting to a wall or ceiling grille in another room — multiple owners report heating their whole 2,500+ sq ft homes via this kit plumbed into HVAC distribution. For multi-room or zone heating in larger homes, the kit transforms the Stratford II from a single-room heater into a multi-zone appliance.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers retrofitting an existing masonry fireplace — that is a wood insert's job, not a zero-clearance fireplace. Look at the Osburn Matrix 2700 or Osburn 3500 insert if you have a masonry opening and want to upgrade its heating performance.\u003c\/p\u003e\n\u003cp\u003eNot for buyers heating more than ~1,800 sq ft as primary winter heat in cold climates or older homes. The 2,200 sq ft figure on the manufacturer's range is aspirational; for primary heat in larger spaces, step up to the Osburn Horizon (4.28 ft³ firebox, 95,000 BTU\/hr, 2,800 sq ft range, 25-inch log capacity).\u003c\/p\u003e\n\u003cp\u003eNot for mobile-home installation. The Stratford II is not approved for mobile-home installation in either the US or Canada per the manufacturer listing. Mobile-home owners need a different appliance category.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who want set-and-forget heating. Wood fireplaces require active operation: lighting, monitoring flue temperature, closing the air at the right moment, deciding when to reload. The fireplace can leave usable coals by morning, but do not expect steady, high output through an entire night without a final reload.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 10+ hour overnight burns. Non-catalytic appliances at this firebox size give you 6–7 hours of useful heat from a packed firebox of dense hardwood; for longer burns, step up to the larger Horizon (11-hour maximum burn) or look at catalytic technology.\u003c\/p\u003e\n\u003cp\u003eNot for buyers in installations where the faceplate fit needs to be perfect on the first try. Multiple owner reviews note that the faceplate can be tricky to install flush against the surrounding wall material — installers need to leave adequate clearance and sometimes the brackets and screws on the fireplace body interfere with the faceplate sliding in. Plan installation time and finish-material clearances accordingly.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAppliance type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eZero-clearance wood fireplace\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuilt into a framed chase and connected to a Class A insulated chimney. Listed shielding and standoffs allow installation inside a combustible framed chase when the manual's required clearances, framing dimensions, and finish-material zones are followed. Not for retrofit into an existing masonry fireplace (that's an insert's job).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; simpler operation than a cat appliance but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e2.5 ft³ overall \/ 1.94 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Mid-size firebox suited to homes in the 1,200–1,800 sq ft range. The 1.94 ft³ EPA loading volume is what was used during emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e80,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Based on loading density of 15–20 lb\/ft³ and reloading intervals of 60–120 minutes. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e12,700–60,700 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e750–2,200 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,200–1,800 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e64% HHV \/ 68% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e70% LHV optimum efficiency at low burn rate; 68% HHV optimum heat-transfer efficiency. HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.2 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified (limit is 2.5 g\/hr) — meaningfully below the larger Horizon (1.6 g\/hr) and the Everest III (1.9 g\/hr). Tested by an independent accredited laboratory.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage CO emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e98 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAverage carbon monoxide emissions per CSA B415.1-10 stack-loss method. Lower than the larger Horizon at comparable output tier — a function of the smaller firebox running at higher burn rates where CO formation is lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLonger logs go east-west across the 20 3\/8\" firebox width. Loading is over width per the manufacturer's loading specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSteel firebox, double cast-iron-framed glass doors, cast-iron andirons\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded steel firebox with moulded refractory brick lining and stainless-steel secondary-air tube system. Double cast-iron-framed ceramic glass doors with air-wash system. Cast-iron andirons included as standard. Limited lifetime warranty on the combustion chamber.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFaceplate\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Traditional (default — classic louvered cast-iron faceplate that matches conventional fireplace aesthetics) or Modern (upgrade — clean horizontal lines for contemporary interiors). The faceplate choice substantially changes the appliance's visual character. Not field-swappable after order without purchasing the alternate kit separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Black (default — matches a stove-iron aesthetic) or Brushed Nickel (upgrade — adds a metallic accent that warms the cast-iron framework). The overlay is a removable trim piece on the front of the doors. Not field-swappable after order without purchasing the alternate kit separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAndirons\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCast iron, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eShips standard with cast-iron andirons that lift logs off the firebox floor for better air circulation and combustion. Adds a classic wood-fireplace aesthetic to the fire. Many competitors sell andirons as a separate accessory.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast or equivalent\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e22 1\/4\" × 12 1\/2\", ceramic, double door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eViewable glass surface, per Osburn's official spec. Ceramic glass with air-wash on each door, tested for high-temperature operation. Wider than the Everest III (18 3\/4\" × 11\") and slightly smaller than the larger Horizon (29 3\/4\" × 13 1\/2\") — proportions optimized for the smaller firebox.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e176 CFM, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eDistributes heat from the back of the unit into the room. Heat sensor cycles the blower automatically based on fireplace temperature. Some owner reviews note the blower can continue running for a period after the fire is out as the unit cools — normal behavior of the heat-sensor cycle. Most owners report acceptable noise levels with the blower; one owner specifically noted it's quiet enough to have TV on in the background.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Chimney must be 6 in interior diameter — same as freestanding wood stoves and the smaller Osburn Everest III, smaller than the larger Horizon's 8-inch chimney. Type of chimney: CAN\/ULC S629 or UL 103 HT (2100 °F). Approved chimney brands include American Metal, DuraVent, Metal Fab, Olympia, Security Chimney, Selkirk, and SBI Venting Division (Ventis, Nexvent). Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum chimney height\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e15 ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec, subject to installer verification, certification label, draft conditions, and local code.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 3\/8\" W × 12 7\/8\" D × 12 1\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. Loading is over width (east-west) per the manufacturer's specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e25 3\/8\" W × 10 1\/2\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening per manufacturer spec. Wide opening accepts long east-west loading easily; height is generous for a wide variety of split sizes.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e36 3\/4\" W × 29 3\/4\" D × 40 5\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions per manufacturer spec. Plan ceiling clearance and chase top accordingly. Smaller chase footprint than the larger Horizon (50 3\/4\" W × 31 3\/4\" D × 43 3\/8\" H).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e468 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling at delivery and installation. The optional Fireplace Carrying Handles assist with the curb-to-chase move. Confirm framing load and floor support before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNot approved for mobile-home installation in either the US or Canada per manufacturer listing. Site-built homes only.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandards\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUL 127 \/ ULC-S610, EPA \/ CSA B415.1-10\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSafety standards UL 127 (USA) and ULC-S610 (Canada) — factory-built fireplace standards. Emissions standards EPA (USA) and CSA B415.1-10 (Canada). EPA 2020 approved. Tested and listed by an accredited laboratory (CAN\/USA).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Stratford II is designed for installation in a permitted residential space — a living room, family room, great room, or any habitable room with adequate floor and wall framing to accept the zero-clearance chase and the 6-inch chimney system. Not approved for mobile or manufactured-home installation, drop-in replacement of an existing prefab\/decorative fireplace (the unit cannot slide into an existing prefab firebox and cannot reuse the old chimney or framing if those do not meet the published requirements), or outdoor or unconditioned-space installation. Replacement installs are possible only when the old fireplace and chimney are fully removed and the chase is verified or rebuilt to meet the required framing dimensions, clearances, and the approved 6-inch UL 103 HT \/ ULC S629 chimney requirement.\u003c\/p\u003e\n\n\u003cp\u003eThis is a zero-clearance unit — it ships with listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase when the manual's framing dimensions, clearances, air spaces, chimney system, and finish-material requirements are followed. No masonry shell is required, but no surface of the firebox or chimney connection is permitted to touch combustible material outside the manual's listed zones.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eCanada\u003c\/span\u003e\u003cspan\u003eUSA\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop (platform to ceiling)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e80\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e80\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side mantle to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e8\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSide wall\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e13\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e13\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eMinimum floor protection in front\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e16\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eShelf to base of fireplace\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e58\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e58\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe 13-inch combustible side-wall clearance is meaningfully tighter than the 24-inch on the Horizon and 21-inch on the Everest III — the Stratford II fits in narrower chase widths, which can be the deciding factor in some installation locations. Verify chase width with your installer before committing.\u003c\/p\u003e\n\n\u003cp\u003eClearances apply identically in Canada and the USA per the manufacturer's clearance table. The certification label on the unit is the binding clearance for any installation and always overrides clearance figures published in any other media. Some appliances have been tested with a low ceiling — refer to the installation manual for reduced-ceiling configurations. Confirm the binding clearance figures with your installer before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eFraming and finish\u003c\/h3\u003e\n\u003cp\u003eA framed chase built per the install manual's framing dimensions is required. The chase width must account for the fireplace body plus space for accessory routing — the install manual specifies adding space for the fresh-air intake pipe (if used) and forced-air pipe (if used) to the width of the chase, plus the thickness of any drywall panels or finishing material inside the chase around the fireplace. Plan the chase dimensions with the installer before framing begins.\u003c\/p\u003e\n\n\u003cp\u003eFinish material around the fireplace opening must be non-combustible within the manual's specified zones — typically a combination of cement board, stone or tile veneer, brick, or steel. Combustible material (wood mantles, decorative trim, paneling) is permitted outside those non-combustible zones at the specified distances. The selected faceplate (Traditional or Modern) and door overlay (Black or Brushed Nickel) form the finished interior edge between the fireplace opening and the surrounding wall material. Multiple owner reviews note that the faceplate fit can be tricky — installers need to leave adequate clearance and ensure that brackets and screws on the fireplace body do not interfere with the faceplate sliding into position.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection \/ hearth extension\u003c\/h3\u003e\n\u003cp\u003eA hearth extension is required if the fireplace is installed directly on the floor or on a raised base of less than 4 inches. The hearth extension must be a continuous non-combustible material extending in front of the fireplace per the install manual's specifications — minimum 16 inches in front of the appliance. If the fireplace sits on a raised base of 4 inches or more, the hearth extension requirements may differ — refer to the install manual's hearth-extension section.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eA 6-inch chimney flue system is required. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. Approved manufacturer\/brand combinations listed by SBI include American Metal HSS and HS, DuraVent DuraTech \/ DuraTech Canada DTC \/ DuraTech Premium \/ DuraPlus HTC \/ DuraPlus, Metal Fab Temp Guard, Olympia Rockford and Champion, Ventis (Olympia\/SBI Venting Division), Nexvent (SBI Venting Division), Security Chimney S-2100+, and Selkirk CF Sentinel \/ Super Pro 2100 \/ Super Vent 2100. Verify the chimney brand and component series with your installer before ordering venting.\u003c\/p\u003e\n\n\u003cp\u003eThe minimum chimney height is 15 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003ch3\u003eForced air kit (optional)\u003c\/h3\u003e\n\u003cp\u003eThe optional Forced Air Kit redirects heat from the fireplace through insulated 6-inch flex ducting to a remote room via a wall or ceiling grille. The manufacturer expects at least 25% heat transfer to other rooms when the fireplace is hot and the system is properly designed — shorter runs with fewer deviations work best, longer or overpowered systems can cool the combustion chamber too quickly and cause poor combustion. Multiple Stratford II owners report heating their entire 2,500+ sq ft homes via the Forced Air Kit plumbed into HVAC distribution pipework with a separate thermostat. Use only the manufacturer-supplied forced air system; aftermarket fans and ducting are not safety-tested for this fireplace and present a fire risk.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eOutside air is not required in conventional homes — combustion air is normally available from room air. However, a 4-inch fresh-air intake register with airtight damper and 4-inch insulated flex pipe are strongly recommended for tight new-construction homes with mechanical ventilation, for homes with powerful range hoods or other mechanical exhaust appliances, and where local code requires it. A smoke detector and carbon monoxide detector are required in the room where the fireplace is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the fireplace is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. Zero-clearance wood-burning fireplaces are a regulated category — confirm local requirements before purchasing, particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the fireplace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStratford II zero-clearance fireplace with welded steel firebox, double cast-iron-framed glass doors with air-wash system, moulded refractory brick panel interior, and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required faceplate selection — Traditional (default) or Modern (upgrade)\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required door overlay selection — Black (default) or Brushed Nickel (upgrade)\u003c\/li\u003e\n\u003cli\u003eCast-iron andirons\u003c\/li\u003e\n\u003cli\u003eListed insulation, shielding, and standoffs that allow installation inside a framed combustible chase per the manual's required clearances, framing dimensions, air spaces, and finish-material zones\u003c\/li\u003e\n\u003cli\u003e176 CFM blower with rheostat speed control and heat sensor for automatic cycling\u003c\/li\u003e\n\u003cli\u003eC-Cast or equivalent baffle\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch Class A insulated chimney system — listed factory-built chimney from an approved manufacturer\/brand per the manufacturer's approved-chimney list; required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protection sized to manual specifications, with continuous non-combustible material extending at least 16 inches in front of the appliance\u003c\/li\u003e\n\u003cli\u003eOptional Forced Air Kit (SBI AC01374) — distributes heat to a remote room via insulated ducting; pairs with 6\" × 25' insulated flex pipe (SBI AC01350)\u003c\/li\u003e\n\u003cli\u003eOptional Traditional Gravity Kit (SBI AC01375) and Modern Gravity Kit with Adjustable Pipes (SBI AC01389) — passive heat-distribution options that don't require forced-air ducting\u003c\/li\u003e\n\u003cli\u003eOptional Firescreen Door (SBI AC01275) — for occasional door-open viewing where local code permits; never leave the fireplace unattended with the firescreen in place\u003c\/li\u003e\n\u003cli\u003eOptional Heat Shield for Surround\/Shelf (SBI AC01223) — additional shielding for shelving installed above or beside the fireplace\u003c\/li\u003e\n\u003cli\u003eOptional Tempered Glass Hearth Pad 18\" × 50\" (SBI AC02760) — coordinated hearth extension finish\u003c\/li\u003e\n\u003cli\u003eOptional 4\" Fresh Air Intake Register with Airtight Damper (SBI AC01347), 4\" × 10' Insulated Flex Pipe for fresh air intake (SBI AC02091), and 4\" × 25' Insulated Flex Pipe for fresh air (SBI AC01359) — for tight homes or where local code requires outside air\u003c\/li\u003e\n\u003cli\u003eOptional Fireplace Carrying Handles (SBI AC09200) — site handling aid during installation; not part of the finished assembly\u003c\/li\u003e\n\u003cli\u003eOptional 48\" Wood Storage with Finishing Trim (SBI AC02351) and Drawer and Tool Kit for Wood Storage Insert (SBI AC02353) — coordinated wood storage solution\u003c\/li\u003e\n\u003cli\u003eDigital moisture reader (SBI AC07835) and probe thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eGlass cleaner (SBI AC07825), dry cleaning pad (SBI AC07824), gloves (SBI AC07820 or AC07822), fire starters — consumables for normal operation and maintenance\u003c\/li\u003e\n\u003cli\u003eReplacement Silicone and 5\/8\" × 8' Black Door Gasket Kit (SBI AC06500) — gasket replacement when the paper-strip test fails\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) and a framing contractor familiar with zero-clearance fireplace chase construction — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 80,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 12,700–60,700 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\n\u003cp\u003eA realistic operating day, primary-heat use, cold climate: morning reload at sunrise produces a fast 60–90 minute warm-up and several hours of high output; mid-afternoon reload sustains heat through evening; a full pack at bedtime gives 6–7 hours of useful heat overnight, with the fireplace at coals by morning. In practical use with seasoned oak, maple, or hickory, expect 6–7 hours of useful heat from a packed load; up to 8 hours under ideal low-burn conditions. With birch, pine, or softer wood, expect 4–5 hours.\u003c\/p\u003e\n\n\u003cp\u003eThe 2.5 ft³ firebox sits in the smaller premium Osburn wood fireplace tier, sized for homes that don't need the Horizon's 4.28 ft³ capacity. The 8-hour maximum burn time is genuinely achievable with the right wood — dense hardwood, properly seasoned, packed tight, air shut hard at the end of the load cycle. Owner reviews repeatedly confirm the heating capability: multiple owners report the Stratford II meeting or exceeding HVAC heat output through cold winters in the 1,200–2,500 sq ft range, particularly when paired with the Forced Air Kit.\u003c\/p\u003e\n\n\u003cp\u003eThe 1.2 g\/hr particulate emissions is meaningfully below the Horizon's 1.6 g\/hr and the Everest III's 1.9 g\/hr, and well below the EPA 2020 cordwood limit of 2.5 g\/hr. For buyers in jurisdictions where emissions matter (EPA non-attainment counties, HOA-restricted areas, BC\/Ontario\/Quebec\/Atlantic Canada residential regulations), the Stratford II provides meaningful compliance margin.\u003c\/p\u003e\n\n\u003cp\u003eThe 64% HHV average efficiency is in line with the other Osburn wood fireplaces. Optimum efficiency of 70% (LHV) at low burn rate is competitive within the EPA 2020 cordwood category. HHV is the federal standard.\u003c\/p\u003e\n\n\u003cp\u003eThe 20-inch maximum log capacity is generous for a 2.5 ft³ firebox. Most firewood suppliers cut to 16 inches, which is also the manufacturer's recommended length. Loading is over width (east-west) per the manufacturer specification.\u003c\/p\u003e\n\n\u003cp\u003eThe included 176 CFM blower with heat sensor meaningfully improves heat distribution into the room. Air is distributed from behind the firebox out through the louvers in the faceplate. Owner reviews on blower noise are mostly positive — quiet enough to have TV on in the background per multiple owners, with a few reports of higher noise at maximum speed. One owner reported the blower continuing to run for a period after the fire is out as the unit cools — normal behavior of the heat-sensor cycle, not a defect.\u003c\/p\u003e\n\n\u003cp\u003eWith the optional Forced Air Kit installed and properly sized, the manufacturer expects at least 25% heat transfer to a remote room. Multiple Stratford II owners report substantially higher heat transfer in practice — heating entire 2,500+ sq ft homes by plumbing the kit into HVAC distribution pipework with a separate thermostat. The kit takes heat that would otherwise stay in the chase and routes it via 6-inch insulated flex pipe to wall, ceiling, or HVAC grilles in another room or zone.\u003c\/p\u003e\n\n\u003cp\u003eThe included cast-iron andirons keep logs lifted off the firebox floor for better air circulation and combustion. Beyond the aesthetic, the andirons help the fire burn cleaner and more efficiently — particularly during start-up and reload cycles when air circulation around the logs makes the most difference.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass on the double doors stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic tube appliances, not specific to Osburn, and it is the strongest signal that your wood is too wet or your burn is too cool.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTwo buyer-configurable choices at order — faceplate and door overlay.\u003c\/strong\u003e Faceplate (Traditional default or Modern upgrade) and door overlay (Black default or Brushed Nickel upgrade). The combination substantially changes the appliance's visual character, and is not field-swappable after order without purchasing the alternate kit separately. Walk through the four possible combinations with the room aesthetic in mind before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFaceplate fit can be finicky.\u003c\/strong\u003e Multiple owner reviews report that the faceplate did not slide in cleanly because brackets and screws on the main fireplace body interfered with the faceplate's mounting position, or because the installer did not leave enough room for the faceplate to sit flush against the surrounding wall material. Plan installation time accordingly and ensure the installer is familiar with the Stratford II faceplate installation procedure. Osburn provides a dedicated faceplate installation instruction sheet — confirm the installer is working from it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSmaller firebox than the Horizon.\u003c\/strong\u003e 2.5 ft³ vs the Horizon's 4.28 ft³ means shorter burn cycles, smaller log capacity (20-inch max vs 25-inch), and lower peak BTU (80,000 vs 95,000). For homes over ~1,800 sq ft as primary winter heat, the Stratford II will require more frequent reloads than the Horizon. Match the firebox to the heating load before purchasing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLong-term wear reports.\u003c\/strong\u003e One owner with under 4 years of use reported significant wear on the inside refractory panels and the door seal, requiring replacement of multiple parts. Wear timing varies substantially by burning habits and wood quality — owners running marginally seasoned wood or excessive burn temperatures see faster wear. Plan for refractory panel inspection every 2–3 seasons and gasket replacement every 3–5 seasons. Replacement parts are openly available through the SBI parts network.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh cleaning can be messy.\u003c\/strong\u003e One owner noted difficulty cleaning ashes without it getting everywhere and the blower then blowing it throughout the house. Best practice: turn the blower OFF before ash removal, let the firebox cool, and use a metal ash container with a lid. Ash should not be removed during active blower operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass smoking up.\u003c\/strong\u003e One owner reported the glass smokes up quite a bit despite using very dry clean wood. Glass tarring is universal to non-catalytic appliances at low burn rates — the most likely causes are burns running too cool (air closed too aggressively) or marginally seasoned wood despite owner assessment. A digital moisture meter and a flue thermometer are the best diagnostic tools.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLower efficiency than freestanding stoves.\u003c\/strong\u003e A wood fireplace at 64% HHV average efficiency is realistically 5–10 efficiency points lower than freestanding wood stoves of comparable firebox volumes. The architectural integration of a built-in fireplace costs heat — less exposed appliance surface to radiate into the room, more heat lost into the chase. Choose a fireplace for the architectural look and the wall-integrated install; choose a freestanding stove if maximum efficiency per cord of wood is the priority.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat appliance gives you simpler operation and no catalyst to replace, but you pay for it with shorter useful-heat windows. The 8-hour maximum claim is achievable on a packed load of dense hardwood with the air shut down hard; useful heat through that cycle is realistically 6–7 hours. For 10+ hour overnight burns with steady output, step up to the larger Horizon (11-hour maximum) or look at catalytic technology.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower behavior after fire is out.\u003c\/strong\u003e The blower can continue running for a period after the fire is out as the unit cools through the heat-sensor cycle. This is normal behavior, not a defect — the sensor stops the blower below approximately 100 °F at the heat shield. Owners who want manual control over blower shutoff can install a switched outlet upstream of the blower.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e468 lb shipping weight.\u003c\/strong\u003e Heavy enough to require multi-person handling at delivery; the curb-to-chase move is not a one- or two-person job. The optional Fireplace Carrying Handles assist with site handling but are not part of the finished assembly. Confirm framing load and floor support before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNot mobile home approved.\u003c\/strong\u003e Not approved for mobile-home installation in either the US or Canada per manufacturer listing. Site-built homes only.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eZero-clearance ≠ retrofit into existing masonry fireplace.\u003c\/strong\u003e If you have an existing masonry fireplace and want to upgrade it to an EPA-certified heating appliance, you need a wood insert (Osburn Matrix 2700 or 3500), not a ZC fireplace. A zero-clearance fireplace replaces a framed decorative fireplace or installs in new chase construction — it does not retrofit into a masonry firebox.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplacement installs require full teardown of the old unit and verification of the chase.\u003c\/strong\u003e Replacing an existing prefab fireplace is not a drop-in swap. The old fireplace and chimney must come out completely, the chase framing must be verified or rebuilt to the required framing dimensions and clearances, and a new approved 6-inch UL 103 HT \/ ULC S629 chimney must be installed. Plan the renovation scope and installer time accordingly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the fireplace doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A digital moisture meter is the single best accessory for this fireplace.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong during paint cure-in. Ventilate the room well, avoid prolonged exposure, and expect the odor to disappear after the first several hot burns.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes top-down lighting as an effective method — largest splits on the bottom resting on the andirons, smaller above, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A flue thermometer is strongly recommended — without one, you are guessing at draft, burn rate, and overfire risk. The manual specifies keeping flue temperature in the comfort zone of 250–475 °F at steady state, with 700 °F acceptable transiently during start-up. Do not maintain excessive temperatures over long periods.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–5 hours between reloads in active high-output use; 6–7 hours for a final overnight pack with the air shut hard. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. Place at least three pieces on the fire at a time so that the heat radiated from one piece helps ignite the pieces next to it. Loading is over width (east-west) per the manufacturer's loading specification. The andirons keep logs lifted for better air circulation underneath.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower management.\u003c\/strong\u003e The blower starts automatically via the heat sensor when the fireplace reaches operating temperature, typically about an hour after cold start. Turn the rheostat to LO or HI to set speed; the sensor handles on\/off. Turn the blower OFF before opening the door fully — otherwise it can blow ash out of the firebox into the room. The blower may continue running for a period after the fire is out as the unit cools through the heat-sensor cycle — normal behavior.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAsh removal.\u003c\/strong\u003e Turn the blower OFF before removing ash. Let the firebox cool. Use a metal ash container with a lid and store outside, away from combustible materials, for at least 48 hours before disposal — embers can remain hot for days. Removing ash with the blower running risks ash being distributed throughout the room.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the fireplace is hot, and do not strike or slam the glass doors shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor alignment and gasket replacement.\u003c\/strong\u003e The door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. The double-door design has gaskets on both doors and at the meeting edge — test all locations. Plan on gasket replacement every 3–5 seasons in regular use. Replacement gasket kits are available through the SBI parts network.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefractory panel inspection.\u003c\/strong\u003e Inspect the moulded refractory brick panels lining the firebox at least once per heating season. Cracks under approximately 1\/8 inch are cosmetic and do not affect performance; cracks wider than that, or panels showing significant chunks broken off, should be replaced. Replacement panels are available through the SBI parts network. Some owners report faster wear when running consistently high temperatures or wet wood.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect monthly during the heating season until you know your creosote-formation rate; if buildup reaches 1\/8 inch, sweep immediately. Heavy burners or those with marginally seasoned wood may need mid-season cleaning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a digital moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eManufactured logs (composite firelogs).\u003c\/strong\u003e Per the manual, only manufactured logs made of 100% wood residues are permitted (no logs containing chemicals or accelerants). Start with one log and gradually increase; never put more than four logs in at a time; logs must be average size and not exceed approximately 8 inches in diameter. Manufactured logs release a large heat output over a short period — over-loading risks damaging the firebox. This four-log limit applies only to manufactured\/composite firelogs and not to normal split cordwood.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, kerosene, diesel fuel, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame, cast-iron andirons\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, faceplate, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSteel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, refractory bricks, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this fireplace and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, faceplate, door overlay, andirons, and venting components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Everest II\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eMid-size sibling in the Osburn wood fireplace line with the lowest particulate emissions in the lineup — 85,000 BTU\/hr maximum output, 750–2,500 sq ft heating range, 72% efficiency, 0.99 g\/hr particulate emissions (lower than Stratford II's 1.2), 9-hour max burn, 18-inch maximum log length, retractable cast-iron double doors, 6-inch chimney, 525 lb shipping weight. Two buyer-configurable choices at order: Traditional or Modern faceplate options, plus Black or Brushed Nickel door overlay options. Optional firescreen door for door-open viewing. Choose the Everest II for the lowest emissions in the Osburn wood fireplace lineup, retractable-door architecture, and 9-hour maximum burn; choose the Stratford II for the wider 20-inch log capacity, included cast-iron andirons, and the narrower 13-inch combustible side-wall clearance that fits tighter chase widths.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Horizon Wood Fireplace\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eLarger sibling in the Osburn wood fireplace line — 4.28 ft³ firebox (vs Stratford II's 2.5), 95,000 BTU\/hr maximum output, 1,000–2,800 sq ft heating range, 11-hour max burn (vs 8), 25-inch log capacity (vs 20), 8-inch chimney (vs 6-inch), 1.6 g\/hr particulate emissions, higher than the Stratford II's 1.2 g\/hr, 29 3\/4\" × 13 1\/2\" glass (wider than Stratford II's 22 1\/4\" × 12 1\/2\"), 560 lb shipping weight, required component bundle with single Prairie Style faceplate (no buyer choice at order). Choose the Horizon for larger homes up to 2,800 sq ft, 25-inch logs, 11-hour max burn, and the wider horizontal glass viewing area; choose the Stratford II for smaller homes, lower particulate emissions, included cast-iron andirons, two buyer-configurable design choices at order (faceplate and door overlay), 6-inch chimney's lower install cost, and the narrower side-wall clearance (13\" vs 24\") that fits in tighter chase widths.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Everest III\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eMid-size sibling in the Osburn wood fireplace line — 3.04 ft³ overall firebox volume, 2.61 ft³ EPA loading volume, 85,000 BTU\/hr maximum output, 750–2,500 sq ft heating range, 65% HHV efficiency, 1.9 g\/hr particulate emissions (higher than Stratford II's 1.2), 8-hour max burn, 20-inch log capacity, 6-inch chimney, 525 lb shipping weight, 18 3\/4\" × 11\" glass (smaller than Stratford II's 22 1\/4\" × 12 1\/2\"). Two buyer-configurable choices at order (faceplate Traditional\/Modern and door overlay Black\/Brushed Nickel — same architecture as Stratford II). Retractable cast-iron door architecture vs Stratford II's standard sealed double doors; mobile-home approved in Canada (Stratford II not mobile-home approved). Choose the Everest III for the slightly larger firebox, retractable-door architecture, and Canada mobile-home compatibility; choose the Stratford II for lower particulate emissions (1.2 vs 1.9 g\/hr), included cast-iron andirons, wider glass viewing area, and the narrower 13-inch side-wall clearance.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 2.5 II\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSister-brand counterpart from SBI's Enerzone line — same chassis class as the Stratford II, 2.5 ft³ firebox, 80,000 BTU\/hr maximum output, 12,700–60,700 BTU\/hr tested band, 64% HHV \/ 68% LHV efficiency, 1.2 g\/hr particulate emissions, 98 g\/hr CO, 8-hour max burn, 20-inch log capacity, 6-inch chimney, 176 CFM included blower, 523 lb shipping weight, 22 1\/4\" × 13 1\/2\" glass, same not-mobile-home-approved. Different brand finish and faceplate styling. Choose the Solution 2.5 II for the Enerzone brand finish; choose the Stratford II for the Traditional or Modern faceplate options at order, Black or Brushed Nickel door overlay options at order, and the Osburn brand and dealer network.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eValcourt FP10R Lafayette II\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSister-brand counterpart from SBI's Valcourt line — 2.5 ft³ firebox in the same tier as the Stratford II, 9-hour max burn time, 6-inch chimney, EPA 2020 compliant, included blower. Five buyer-configurable faceplate louver choices at order with Black or Brushed Nickel door overlays — substantially more configuration flexibility than the Stratford II's two faceplate × two overlay options. Valcourt is SBI's premium-positioned brand with Quebec-heritage design language. Choose the Lafayette II for the five faceplate louver options and Valcourt's premium brand positioning; choose the Stratford II for the Osburn brand and broader US dealer network, included cast-iron andirons, and typically lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy FP25 LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the EPA-certified mid-size zero-clearance wood fireplace category, built by Pacific Energy in British Columbia. 2.4 ft³ firebox (similar to Stratford II's 2.5), 71% optimum efficiency, 1.88 g\/hr emissions (higher than Stratford II's 1.2), 20-inch maximum log capacity, included blower, EPA 2020 certified with Pacific Energy's Extended Burn Technology (EBT) and heavy-gauge floating firebox build. Significantly higher purchase price than the Stratford II. Choose the Pacific Energy FP25 LE for higher optimum efficiency, the Pacific Energy floating-firebox build philosophy, and the established premium cross-brand reputation; choose the Stratford II for lower particulate emissions (1.2 vs 1.88 g\/hr), included cast-iron andirons, two buyer-configurable design choices at order, and lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eA premium mid-tier Osburn wood fireplace with included cast-iron andirons, two buyer-configurable design choices at order, and particulate emissions meaningfully below the larger Horizon and Everest III. For buyers who want refined cast-iron styling, serious EPA 2020 heating capability, and emissions margin without stepping up to the larger Horizon.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Traditional","offer_id":49277101244609,"sku":"OB04007+OA10610+OA10255","price":5379.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Modern","offer_id":49277101310145,"sku":"OB04007+OA10610+OA10256","price":5434.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Traditional","offer_id":49277101277377,"sku":"OB04007+OA10612+OA10255","price":5654.0,"currency_code":"USD","in_stock":true},{"title":"Brushed Nickel \/ Modern","offer_id":49277101342913,"sku":"OB04007+OA10612+OA10256","price":5709.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-stratford-ii-wood-fireplace-front-ob04007_ea0be3e6-82ff-4dd2-97f2-9bf9829d1b6f.webp?v=1748291798"},{"product_id":"osburn-everest-iii-wood-fireplace","title":"Osburn Everest III Wood Fireplace","description":"\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231F20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\n\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; align-self: center; }\n    .km-desc .spec-value { margin-bottom: 0; font-size: 14px; align-self: center; }\n    .km-desc .spec-meaning { font-size: 13px; }\n    .km-desc .spec-row:first-child { padding-top: 12px; }\n  }\n  .km-desc .data-row { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding: 12px 0; border-bottom: 1px solid rgba(75,72,75,0.12); align-items: baseline; font-size: 13px; }\n  .km-desc .data-head + .data-row { border-top: 1px solid rgba(75,72,75,0.35); }\n  .km-desc .data-row .data-label { color: #4B484B; line-height: 1.4; }\n  .km-desc .data-row .data-val { font-weight: 600; color: #231F20; text-align: right; min-width: 56px; }\n  .km-desc .data-head { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; padding-bottom: 8px; font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; }\n  .km-desc .data-head span:nth-child(2), .km-desc .data-head span:nth-child(3) { text-align: right; min-width: 56px; }\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"km-desc\"\u003e\n\n\u003cp class=\"lede\"\u003eA 3.04 ft³ non-catalytic zero-clearance wood-burning fireplace with retractable cast-iron double doors, an included 176 CFM blower, 20-inch maximum east-west log capacity, and 18 3\/4\" × 11\" ceramic glass. EPA 2020 cordwood certified at 65% HHV efficiency and 1.9 g\/hr emissions, with up to 8-hour maximum burn and 85,000 BTU\/hr peak output. Built into a new or properly rebuilt framed chase as primary or supplemental heat for properly vented homes in the 1,300–2,000 sq ft real-world range. Two buyer-configurable choices at order: faceplate style (Traditional or Modern) and door overlay finish (Black or Brushed Nickel).\u003c\/p\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 1,300 and 2,000 sq ft who want a wood-burning fireplace built into the wall with the heat output and EPA 2020 cordwood compliance of a serious heating appliance, not a decorative-only fireplace.\u003c\/p\u003e\n\u003cp\u003eNew-construction buyers framing a fireplace chase from scratch per the install manual's dimensions, OR substantial-renovation buyers replacing an aging factory-built prefab fireplace where the existing chase framing and chimney can be verified or rebuilt to meet the Everest III's specific requirements. Replacement is not a drop-in: the old prefab unit must come out completely, the old chimney must be removed or replaced with an approved 6-inch UL 103 HT \/ ULC S629 system, and the existing chase framing must meet the published framing dimensions and clearances or be rebuilt to meet them. The unit cannot slide into an existing prefab firebox and cannot reuse an unapproved chimney or framing system. The Everest III is a zero-clearance fireplace — it ships with listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase when the manual's framing dimensions, clearances, air spaces, chimney system, and finish-material requirements are followed.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the retractable cast-iron door architecture. Closed, the fireplace runs as a sealed EPA-certified heating appliance — this is the standard operating mode and the mode the unit is built and certified around. Where local code permits, the doors can also retract for attended firescreen viewing using the optional firescreen door (SBI AC01226); this open-fire mode is prohibited in the United States and in Canadian provinces with particulate emission limits, so US buyers should treat it as not available. Even setting aside the open-fire mode, the retractable cast-iron door architecture is a meaningful design difference from the sealed double-door geometry of the Stratford II or Solution 2.5 ZC II.\u003c\/p\u003e\n\u003cp\u003eBuyers who want broad configurability at order. Two design choices are real buyer selections: Traditional faceplate (clean classical lines) or Modern faceplate (upgrade), and Black door overlay or Brushed Nickel door overlay (upgrade). Pairings let you steer the visual toward traditional or contemporary without changing the appliance's heating performance.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the optional NightFlame ceramic glass upgrade (AC02776) — semi-transparent black glass that conceals the firebox when the fire is out and reveals the flame when burning. Available only on this and a few other SBI models with the ROBAX® NightFlame option.\u003c\/p\u003e\n\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers retrofitting an existing masonry fireplace — that is a wood insert's job, not a zero-clearance fireplace. Look at the Osburn Matrix 2700 or Enerzone Destination 2.3 insert if you have a masonry opening and want to upgrade its heating performance.\u003c\/p\u003e\n\u003cp\u003eNot for buyers heating more than ~2,000 sq ft as primary winter heat in cold climates or older homes. The 2,500 sq ft figure on the manufacturer's range is aspirational; for primary heat in larger spaces, step up to the Osburn Horizon or Enerzone Solution 4.5 ZC (4.28 ft³ firebox, 95,000 BTU\/hr, 25-inch logs, 11-hour burn).\u003c\/p\u003e\n\u003cp\u003eNot for buyers who want set-and-forget heating. Wood fireplaces require active operation: lighting, monitoring flue temperature, closing the air at the right moment, deciding when to reload. The fireplace can leave usable coals by morning, but do not expect steady, high output through an entire night.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 12+ hour overnight burns. Non-catalytic appliances give you 6–8 hours of useful heat from a packed firebox of dense hardwood; for longer burns, a catalytic stove is the right tool.\u003c\/p\u003e\n\u003cp\u003eNot for mobile-home installation in the United States. The Everest III is mobile-home approved in Canada only; US mobile-home or manufactured-home owners need a different appliance category.\u003c\/p\u003e\n\u003cp\u003eNot for narrow chase framing. The 21-inch combustible side-wall clearance is meaningfully larger than the 13-inch side-wall clearance on the Solution 2.5 ZC II — this fireplace needs more lateral framing space in the surrounding wall structure. Verify your wall framing depth before specifying this model.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"spec-list\"\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAppliance type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eZero-clearance wood fireplace\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuilt into a framed chase and connected to a Class A insulated chimney. Listed shielding and standoffs allow installation inside a combustible framed chase when the manual's required clearances, framing dimensions, and finish-material zones are followed. Not for retrofit into an existing masonry fireplace (that's an insert's job).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; simpler operation than a cat appliance but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e3.04 ft³ overall \/ 2.61 ft³ EPA\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Mid-size firebox between the smaller Stratford II \/ Solution 2.5 ZC II (2.5 ft³ overall) and the larger Horizon \/ Solution 4.5 ZC (4.28 ft³). The 2.61 ft³ EPA loading volume is what was used during emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e85,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e25,900–78,200 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e750–2,500 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,300–2,000 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e65% HHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e71.6% optimum overall efficiency at low burn rate; 68% optimum heat-transfer efficiency. Slightly higher average than the smaller Stratford II \/ Solution 2.5 ZC II (64% HHV). HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.9 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified (limit is 2.5 g\/hr) — below the ceiling. Tested by an independent accredited laboratory.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage CO emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.7 g\/min per manufacturer spec\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eCarbon monoxide emissions per CSA B415.1-10 stack-loss method. Manufacturer's published unit is g\/min on this model; most SBI wood appliances publish CO in g\/hr. Read as ~102 g\/hr if comparing to the g\/hr figures on other appliances. Verify the unit with the dealer or installer if the comparison matters to your purchase decision.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 8 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 6–7 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manual. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLonger logs go east-west across the width. The 17-inch firebox depth also accepts north-south loading for packed overnight cycles.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSteel firebox, retractable cast-iron double doors\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded steel firebox with moulded refractory brick lining and stainless-steel secondary-air tube system. Cast-iron-framed glass doors with a retractable mechanism. Closed-door operation is the standard heating mode and the configuration the EPA 2020 cordwood certification was tested against. Limited lifetime warranty on the combustion chamber.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFaceplate\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Traditional Faceplate (default, classical lines) or Modern Faceplate (upgrade, contemporary). The visible trim surrounding the fireplace opening once installed. Not field-swappable after order.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor overlay\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eConfigured at order\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuyer-configurable: Black Door Overlay (default) or Brushed Nickel Door Overlay (upgrade). Sets the finish of the cast-iron door frame visible through the faceplate opening. Not field-swappable after order.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 3\/4\" × 11\", ceramic, double door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eViewable glass surface, per Osburn's official spec. Ceramic glass with air-wash on each door, tested to 1,400 °F. Narrower viewing area than the Stratford II \/ Solution 2.5 ZC II (22 1\/4\" × 13 1\/2\") despite a larger firebox — a function of the retractable-door architecture. Optional NightFlame ceramic glass upgrade (AC02776) conceals the firebox when the fire is out.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e176 CFM, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eDistributes heat from the back of the unit into the room.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e6 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Chimney must be 6 in interior diameter. Type of chimney: CAN\/ULC S629 or UL 103 HT (2100 °F). Approved chimney brands include American Metal, DuraVent, Metal Fab, Olympia, Security Chimney, Selkirk, and SBI Venting Division (Ventis, Nexvent). Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum chimney height\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e15 ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec, subject to installer verification, certification label, draft conditions, and local code.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e18 3\/4\" W × 17\" D × 16 7\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. The 17-inch depth accepts loading over both width (east-west) and depth (north-south) — useful for packed overnight cycles.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e20 3\/4\" W × 9 5\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening per manufacturer spec. Tight height — sizes splits and east-west loads accordingly.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e41 7\/8\" W × 29\" D × 49 1\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions per manufacturer spec. Taller than the Solution 2.5 ZC II (40 5\/8\" H) and Stratford II — plan ceiling clearance and chase top accordingly. Plan framing per the install manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e525 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling at delivery and installation. Confirm framing load and floor support before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eCanada only\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eApproved for mobile-home installation in Canada per manufacturer listing. NOT approved for mobile-home installation in the United States. Site-built homes only in the US market.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandards\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUL 127 \/ ULC-S610, EPA \/ CSA B415.1-10\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSafety standards UL 127 (USA) and ULC-S610 (Canada) — factory-built fireplace standards. Emissions standards EPA (USA) and CSA B415.1-10 (Canada). Tested and listed by an accredited laboratory (CAN\/USA).\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Everest III is designed for installation in a permitted residential space — a living room, great room, family room, or any habitable room with adequate floor and wall framing to accept the zero-clearance chase and the 6-inch chimney system. In the US market it is not approved for mobile or manufactured-home installation; in Canada it carries a mobile-home approval per the manufacturer listing. It is not approved for drop-in replacement of an existing prefab\/decorative fireplace (the unit cannot slide into an existing prefab firebox and cannot reuse the old chimney or framing if those do not meet the published requirements), or outdoor or unconditioned-space installation. Replacement installs are possible only when the old fireplace and chimney are fully removed and the chase is verified or rebuilt to meet the required framing dimensions, clearances, and the approved 6-inch UL 103 HT \/ ULC S629 chimney requirement.\u003c\/p\u003e\n\n\u003cp\u003eThis is a zero-clearance unit — it ships with listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase when the manual's framing dimensions, clearances, air spaces, chimney system, and finish-material requirements are followed. No masonry shell is required, but no surface of the firebox or chimney connection is permitted to touch combustible material outside the manual's listed zones. Garage, shop, cabin, or non-residential installations should be cleared with the AHJ, insurer, and authorized installer before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eCanada\u003c\/span\u003e\u003cspan\u003eUSA\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop (platform to ceiling)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e80\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e80\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side mantle to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e8\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side wall to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e21\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e21\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eFrom shelf to base of fireplace\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e48\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e48\"\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eThe 21-inch combustible side-wall clearance is meaningfully larger than the 13-inch side-wall clearance on the Solution 2.5 ZC II and other smaller SBI fireplaces — this fireplace needs more lateral wall framing space. Verify chase width with your installer before committing.\u003c\/p\u003e\n\n\u003cp\u003eClearances apply identically in Canada and the USA per the manufacturer's clearance table. The certification label on the unit is the binding clearance for any installation and always overrides clearance figures published in any other media. Some appliances have been tested with a low ceiling — refer to the installation manual for reduced-ceiling configurations. Confirm the binding clearance figures with your installer before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eFraming and finish\u003c\/h3\u003e\n\u003cp\u003eA framed chase built per the install manual's framing dimensions is required. The chase width must account for the fireplace body plus space for accessory routing — the install manual specifies adding space for the fresh-air intake pipe (if used) and forced-air pipe (if used) to the width of the chase, plus the thickness of any drywall panels or finishing material inside the chase around the fireplace. Plan the chase dimensions with the installer before framing begins.\u003c\/p\u003e\n\n\u003cp\u003eFinish material around the fireplace opening must be non-combustible within the manual's specified zones — typically a combination of cement board, stone or tile veneer, brick, or steel. Combustible material (wood mantles, decorative trim, paneling) is permitted outside those non-combustible zones at the specified distances. The faceplate (Traditional or Modern, configured at order) and door overlay (Black or Brushed Nickel, configured at order) form the finished edge between the fireplace and the surrounding wall material.\u003c\/p\u003e\n\n\u003ch3\u003eFloor protection \/ hearth extension\u003c\/h3\u003e\n\u003cp\u003eA hearth extension is required if the fireplace is installed directly on the floor or on a raised base of less than 4 inches. The hearth extension must be a continuous non-combustible material extending in front of the fireplace per the install manual's specifications. If the fireplace sits on a raised base of 4 inches or more, the hearth extension requirements may differ — refer to the install manual's hearth-extension section.\u003c\/p\u003e\n\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eA 6-inch chimney flue system is required. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. Approved manufacturer\/brand combinations listed by SBI include American Metal HSS and HS, DuraVent Dura Tech \/ Dura Tech Premium \/ Dura Plus HTC \/ Dura Plus, Metal Fab Temp Guard, Olympia Champion and Rockford, Ventis (Olympia\/SBI Venting Division), Nexvent (SBI Venting Division), Security Chimney ASHT and S-2100, and Selkirk Ultimate Plus \/ CF Sentinel \/ Super Pro 2100 \/ Super Vent 2100. Verify the chimney brand and component series with your installer before ordering venting.\u003c\/p\u003e\n\n\u003cp\u003eThe minimum chimney height is 15 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\n\u003ch3\u003eForced air kit (optional)\u003c\/h3\u003e\n\u003cp\u003eThe optional Forced Air Kit (SBI VA4460) redirects heat from the fireplace through insulated 6-inch flex ducting (SBI AC01350) to a remote room via a wall or ceiling grille. The manufacturer expects at least 25% heat transfer to other rooms when the fireplace is hot and the system is properly designed — shorter runs with fewer deviations work best, longer or overpowered systems can cool the combustion chamber too quickly and cause poor combustion. Use only the manufacturer-supplied forced air system; aftermarket fans and ducting are not safety-tested for this fireplace and present a fire risk.\u003c\/p\u003e\n\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eOutside air is not required in conventional homes — combustion air is normally available from room air. However, the optional fresh-air intake register (SBI AC01347, 4-inch) and 4-inch × 10-foot insulated flex pipe (SBI AC02091) are strongly recommended for tight new-construction homes with mechanical ventilation, for homes with powerful range hoods or other mechanical exhaust appliances, and where local code requires it. A smoke detector and carbon monoxide detector are required in the room where the fireplace is installed.\u003c\/p\u003e\n\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the fireplace is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. Zero-clearance wood-burning fireplaces are a regulated category — confirm local requirements before purchasing, particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003ch3\u003eShips with the fireplace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEverest III zero-clearance fireplace with welded steel firebox, retractable cast-iron double doors, moulded refractory brick lining, stainless-steel secondary-air system, and listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase per the manual's required clearances, framing dimensions, air spaces, and finish-material zones\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required faceplate selection — Traditional Faceplate (default) or Modern Faceplate (upgrade)\u003c\/li\u003e\n\u003cli\u003eConfigured at order with required door overlay selection — Black Door Overlay (default) or Brushed Nickel Door Overlay (upgrade)\u003c\/li\u003e\n\u003cli\u003e176 CFM blower with rheostat speed control\u003c\/li\u003e\n\u003cli\u003eC-Cast baffle\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 6-inch Class A insulated chimney system — listed factory-built chimney from an approved manufacturer\/brand per the manufacturer's approved-chimney list; required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protection sized to manual specifications, with continuous non-combustible material in front of the fireplace\u003c\/li\u003e\n\u003cli\u003eOptional Forced Air Kit (SBI VA4460) — distributes heat to a remote room via insulated ducting; includes 6\" × 25' insulated flex pipe (SBI AC01350); use only manufacturer-supplied components\u003c\/li\u003e\n\u003cli\u003eOptional Firescreen Door (SBI AC01226) — for occasional attended fire viewing only with the retractable doors open, where permitted by local code and only when used exactly as instructed in the firescreen manual; never leave the fireplace unattended when used with a firescreen. Open-door operation with a firescreen is prohibited in the United States and in Canadian provinces with particulate emission limits\u003c\/li\u003e\n\u003cli\u003eOptional NightFlame Semi-Transparent Black Glass set of 2 (SBI AC02776) — ROBAX® ceramic glass upgrade that conceals the firebox interior when the fire is out and reveals the flames when burning\u003c\/li\u003e\n\u003cli\u003eOptional Traditional Gravity Kit (SBI AC01375) — for installations where finish material extends to the edge of the door without visible louvers, traditional style\u003c\/li\u003e\n\u003cli\u003eOptional 4-inch fresh-air intake register with airtight damper (SBI AC01347) — closable outside-air damper for tight homes or where local code requires it; do not close while the fireplace is in use\u003c\/li\u003e\n\u003cli\u003eOptional 4-inch × 10' insulated flex pipe for fresh air intake (SBI AC02091)\u003c\/li\u003e\n\u003cli\u003eOptional Fireplace Carrying Handles (SBI AC09200) — site handling aid during installation; not part of the finished assembly\u003c\/li\u003e\n\u003cli\u003eDigital moisture reader and probe thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) and a framing contractor familiar with zero-clearance fireplace chase construction — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe 85,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 25,900–78,200 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\n\u003cp\u003eA realistic operating day, primary-heat use, cold climate: morning reload at sunrise produces a fast 60–90 minute warm-up and several hours of high output; mid-afternoon reload sustains heat through evening; a full pack at bedtime gives 6–7 hours of useful heat overnight, with the fireplace at coals by morning. In practical use with seasoned oak, maple, or hickory, expect 6–8 hours of useful heat from a packed load. With birch, pine, or softer wood, expect 4–5 hours.\u003c\/p\u003e\n\n\u003cp\u003eThe retractable cast-iron double doors are the structural signature of this fireplace. Closed, the doors form a sealed combustion envelope with air-wash glass — this is the standard operating mode and the configuration the EPA 2020 cordwood certification was tested against. The retracted-door mode with the optional firescreen door (SBI AC01226) is prohibited in the United States and in Canadian provinces with particulate emission limits; where the open-fire mode is permitted, it is for attended viewing only and is not the EPA-certified combustion configuration.\u003c\/p\u003e\n\n\u003cp\u003eThe 65% HHV average efficiency is slightly higher than the smaller Stratford II \/ Solution 2.5 ZC II (64% HHV) — modest improvement from the larger firebox and the heat-transfer geometry of the retractable-door design. The 71.6% optimum at low burn rate is competitive with the larger Horizon \/ Solution 4.5 ZC.\u003c\/p\u003e\n\n\u003cp\u003eThe 20-inch maximum log capacity is generous for a 3.04 ft³ firebox. Most firewood suppliers cut to 16 inches, which is also the manual's recommended length. The 17-inch firebox depth accepts loading over both width (east-west) and depth (north-south) — north-south loading allows packed overnight cycles with maximum fuel mass.\u003c\/p\u003e\n\n\u003cp\u003eThe included 176 CFM blower meaningfully improves heat distribution into the room and adjacent spaces — the same blower used on the larger Horizon and Solution 4.5 ZC. Air is distributed from behind the firebox out through the louvers.\u003c\/p\u003e\n\n\u003cp\u003eWith the optional Forced Air Kit (SBI VA4460) installed and properly sized, the manufacturer expects at least 25% heat transfer to a remote room — typically a bedroom on the same floor, or an adjacent zone of a great-room layout. The kit takes heat that would otherwise stay in the chase and routes it via 6-inch insulated flex pipe to a wall or ceiling grille in another room. Shorter, straighter runs work best; long or twisty runs cool the combustion chamber and reduce both heat output and combustion quality.\u003c\/p\u003e\n\n\u003cp\u003eThe 1.9 g\/hr particulate emissions is below the EPA 2020 cordwood limit of 2.5 g\/hr — higher than the 1.2 g\/hr Stratford II or 1.6 g\/hr Horizon, but still cleanly compliant. The CO emissions figure on the manufacturer page is published as 1.7 g\/min (not g\/hr like other SBI fireplaces) — if read as g\/hr equivalent it's approximately 102 g\/hr, in line with the Stratford II's 98 g\/hr. Verify the unit with the dealer if the number drives the purchase decision.\u003c\/p\u003e\n\n\u003cp\u003eAir-wash glass on the double doors stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic tube appliances, not specific to Osburn, and it is the strongest signal that your wood is too wet or your burn is too cool.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eTwo buyer-configurable choices at order.\u003c\/strong\u003e Faceplate (Traditional default, Modern upgrade) and door overlay (Black default, Brushed Nickel upgrade) are real buyer selections — both with upcharges, neither field-swappable after order. Walk through both choices with the room aesthetic in mind before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNarrower glass viewing area than smaller siblings.\u003c\/strong\u003e The 18 3\/4\" × 11\" ceramic glass is smaller than the 22 1\/4\" × 13 1\/2\" glass on the Solution 2.5 ZC II \/ Stratford II despite the larger firebox. The retractable-door architecture takes some viewing real estate. If wide flame view is the priority and you don't need the retractable-door architecture, the smaller sibling models offer more glass area.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLarger combustible side-wall clearance.\u003c\/strong\u003e 21 inches of combustible side-wall clearance is meaningfully more than the 13 inches required for the Solution 2.5 ZC II. The chase needs wider lateral framing space — verify the wall depth where the fireplace will be installed before committing to this model.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLower efficiency than freestanding stoves.\u003c\/strong\u003e A wood fireplace at 65% HHV average efficiency is realistically 5–10 efficiency points lower than freestanding wood stoves of comparable firebox volumes. The architectural integration of a built-in fireplace costs heat — less exposed appliance surface to radiate into the room, more heat lost into the chase. Choose a fireplace for the architectural look and the wall-integrated install; choose a freestanding stove if maximum efficiency per cord of wood is the priority.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eForced air kit is sold separately.\u003c\/strong\u003e While the 176 CFM blower is included, the Forced Air Kit (VA4460) that redirects heat to a remote room is an additional line item. For multi-room or multi-zone heating, plan the kit cost and the chase pre-routing for the 6-inch flex pipe before framing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat appliance gives you simpler operation and no catalyst to replace, but you pay for it with shorter burns. The 8-hour maximum claim is achievable on a packed load of dense hardwood with the air shut down hard; useful heat through that cycle is realistically 6–7 hours. For 12+ hour overnight burns with steady output, a catalytic or hybrid stove is the right tool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e525 lb shipping weight.\u003c\/strong\u003e Heavy enough to require multi-person handling at delivery; the curb-to-chase move is not a one- or two-person job. Confirm framing load and floor support before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMobile home approval split by country.\u003c\/strong\u003e Approved for mobile-home installation in Canada per manufacturer listing; NOT approved for mobile-home installation in the United States. US buyers in mobile or manufactured homes need a different appliance category.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOpen-fire firescreen operation is not available in the US.\u003c\/strong\u003e Open-door operation with the optional firescreen door (AC01226) is prohibited in the United States and in Canadian provinces with particulate emission limits. The Everest III's retractable-door architecture is a design feature, but US buyers should plan to operate the fireplace in closed-door mode only — the standard configuration the EPA 2020 certification was tested against. Do not buy this model on the assumption that open-fire viewing will be a usable operating mode in the US market.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eZero-clearance ≠ retrofit into existing masonry fireplace.\u003c\/strong\u003e If you have an existing masonry fireplace and want to upgrade it to an EPA-certified heating appliance, you need a wood insert (Osburn Matrix 2700 or Enerzone Destination 2.3 insert), not a ZC fireplace. A zero-clearance fireplace replaces a framed decorative fireplace or installs in new chase construction — it does not retrofit into a masonry firebox.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplacement installs require full teardown of the old unit and verification of the chase.\u003c\/strong\u003e Replacing an existing prefab fireplace is not a drop-in swap. The old fireplace and chimney must come out completely, the chase framing must be verified or rebuilt to the required framing dimensions and clearances, and a new approved 6-inch UL 103 HT \/ ULC S629 chimney must be installed. Plan the renovation scope and installer time accordingly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCO emissions unit on the manufacturer page is published as g\/min, not g\/hr.\u003c\/strong\u003e Most SBI wood appliances publish average CO in g\/hr; the Everest III page lists 1.7 g\/min. If accurate as published, that's approximately 102 g\/hr — in line with the Stratford II's 98 g\/hr. Confirm the unit with the dealer or manufacturer if the figure matters to your decision.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the fireplace doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A digital moisture meter is the single best accessory for this fireplace.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat appliances. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this fireplace. Owners chasing always-clear glass on long, slow burns should look at catalytic technology — or to the optional NightFlame ceramic glass (AC02776), which conceals the firebox when the fire is out and changes the glass appearance entirely.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong during paint cure-in. Ventilate the room well, avoid prolonged exposure, and expect the odor to disappear after the first several hot burns.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes top-down lighting as an effective method — largest splits on the bottom, smaller above, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A flue thermometer is strongly recommended — without one, you are guessing at draft, burn rate, and overfire risk. The manual specifies keeping flue temperature in the comfort zone of 250–475 °F at steady state, with 700 °F acceptable transiently during start-up. Do not maintain excessive temperatures over long periods.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eClosed-door operation is the standard heating mode.\u003c\/strong\u003e Closed-door operation is the EPA-certified combustion configuration. The doors regulate combustion air through the air-wash glass and form the sealed envelope the certification was tested against. The optional firescreen door (AC01226) is for occasional attended viewing only where local code permits; open-door operation with a firescreen is prohibited in the United States and in Canadian provinces with particulate emission limits. Never leave the fireplace unattended in any operating mode.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–5 hours between reloads in active high-output use; 6–7 hours for a final overnight pack with the air shut hard. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. Place at least three pieces on the fire at a time so that the heat radiated from one piece helps ignite the pieces next to it. Normal cordwood loading has no four-log limit — pack the firebox as the loading geometry and burn schedule allow, up to the air-tube level.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower management.\u003c\/strong\u003e The blower starts automatically via the included heat sensor when the fireplace reaches operating temperature, typically about an hour after cold start. Turn the rheostat to LO or HI to set speed; the sensor handles on\/off. Turn the blower OFF before opening the door fully — otherwise it can blow ash out of the firebox into the room.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the fireplace is hot, and do not strike or slam the glass doors shut.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoor alignment and gasket replacement.\u003c\/strong\u003e The door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. The double-door design has gaskets on both doors and at the meeting edge — test all locations. Plan on gasket replacement every 3–5 seasons in regular use. Gasket and silicone kits and self-adhesive glass gasket are available through the SBI parts network.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect monthly during the heating season until you know your creosote-formation rate; if buildup reaches 1\/8 inch, sweep immediately. Heavy burners or those with marginally seasoned wood may need mid-season cleaning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a digital moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eManufactured logs (composite firelogs).\u003c\/strong\u003e Per the manual, only manufactured logs made of 100% wood residues are permitted (no logs containing chemicals or accelerants). Start with one log and gradually increase; never put more than four logs in at a time; logs must be average size and not exceed 8 inches in diameter. Manufactured logs release a large heat output over a short period — over-loading risks damaging the firebox. This four-log limit applies only to manufactured\/composite firelogs and not to normal split cordwood.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, kerosene, diesel fuel, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, faceplate, door overlay, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSteel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, refractory bricks, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this fireplace and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, faceplate, door overlay, and venting components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Stratford II\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller sibling in the Osburn wood fireplace line — 2.5 ft³ overall firebox volume, 1.94 ft³ EPA loading volume, 80,000 BTU\/hr maximum output, 12,700–60,700 BTU\/hr tested band, 64% HHV \/ 68% LHV efficiency, 70% optimum overall and 68% optimum heat-transfer, 1.2 g\/hr particulate emissions (lower than Everest III's 1.9), 98 g\/hr average CO, 8-hour max burn, 20-inch log capacity, 176 CFM included blower, 6-inch chimney, 15-foot minimum chimney height, UL 127 \/ ULC-S610 safety standards, EPA 2020 cordwood certified, not mobile-home approved. Sealed double-door design without retractable architecture — pure closed-combustion configuration. Larger 22 1\/4\" × 12 1\/2\" glass than Everest III's 18 3\/4\" × 11\", smaller overall footprint, 468 lb shipping weight, configurable Traditional\/Modern faceplate with required Black\/Brushed Nickel door overlay. Choose the Stratford II for lower emissions, larger glass area, smaller chase footprint, and a straightforward sealed-door fireplace; choose the Everest III for the larger firebox, slightly higher average efficiency, the retractable cast-iron door architecture, and the NightFlame glass upgrade option.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Horizon\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eLarger sibling in the Osburn wood fireplace line — 4.28 ft³ firebox, 95,000 BTU\/hr maximum output, 1,000–2,800 sq ft heating range, 25-inch log capacity, 11-hour maximum burn, 8-inch chimney (vs Everest III's 6-inch). Same 176 CFM included blower, same architectural integration (zero-clearance fireplace built into a framed chase), same EPA 2020 certification category. Sealed double-door design, no retractable architecture. Choose the Everest III for smaller homes, the retractable cast-iron door architecture, the 6-inch chimney's lower install cost, two configurable design choices at order, and the NightFlame glass option; choose the Horizon for the bigger firebox, 25-inch logs, longer 11-hour burn, primary heat across larger spaces up to 2,800 sq ft, and the wider 29 3\/4\" × 13 1\/2\" glass area.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy FP25 LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the EPA-certified zero-clearance wood fireplace category, built by Pacific Energy in British Columbia. 2.1 ft³ firebox (smaller than 3.04), 67% HHV efficiency, 1.4 g\/hr emissions, 18-inch maximum log capacity, two 80 CFM temperature-actuated blowers, cast-iron door, mobile-home approved (including in the US, where Everest III is Canada-only), 610 lb shipping weight, EPA 2020 certified with catalytic-free Extended Burn Technology (EBT) and a heavy-gauge steel floating firebox. No retractable-door architecture; standard sealed-door design. Choose the Pacific Energy FP25 LE for US mobile-home compatibility, slightly lower emissions, and the Pacific Energy floating-firebox build philosophy; choose the Everest III for the larger 3.04 ft³ firebox, 20-inch log capacity vs 18-inch, retractable cast-iron door architecture, two configurable design choices, and the NightFlame glass option.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 2.5 ZC II\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSBI sister-brand counterpart in the smaller medium fireplace class — 2.5 ft³ overall firebox volume, 1.94 ft³ EPA loading volume, 80,000 BTU\/hr maximum output, 1.2 g\/hr particulate emissions (lower than Everest III's 1.9), 98 g\/hr average CO, 8-hour max burn, 20-inch log capacity, 176 CFM included blower, 6-inch chimney, 22 1\/4\" × 13 1\/2\" glass (larger than Everest III's 18 3\/4\" × 11\"), included cast-iron andirons, sealed double-door design, not mobile-home approved. One buyer-configurable choice (louver style) versus the Everest III's two. Choose the Solution 2.5 ZC II for lower emissions, larger glass, included andirons, simpler at-order configuration, and the Enerzone brand finish; choose the Everest III for the larger 3.04 ft³ firebox, retractable cast-iron door architecture, configurable faceplate and door overlay, and the optional NightFlame glass upgrade.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cp class=\"pull\"\u003eA built-in EPA-certified heating fireplace with retractable cast-iron doors, configurable faceplate and door-overlay finishes, and the option for firescreen viewing only where local code permits. Closed-door operation is the standard heating mode — the mode this fireplace is built and certified around.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Black \/ Traditional","offer_id":49277221667009,"sku":"OB04017+OA10620+OA10623","price":6279.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Modern","offer_id":49277221732545,"sku":"OB04017+OA10620+OA10621","price":6334.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Traditional","offer_id":49277221699777,"sku":"OB04017+OA10622+OA10623","price":6554.0,"currency_code":"USD","in_stock":true},{"title":"Brushed nickel \/ Modern","offer_id":49277221765313,"sku":"OB04017+OA10622+OA10621","price":6609.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-everest-iii-wood-fireplace-front-ob04016_0f3472b8-8b99-4643-92d1-67fec0ef7b14.webp?v=1748292064"},{"product_id":"osburn-horizon-wood-fireplace","title":"Osburn Horizon Wood Fireplace","description":"\u003cstyle\u003e\n  .km-desc, .km-desc * { box-sizing: border-box; max-width: 100%; }\n  .km-desc { width: 100%; }\n  .km-desc p { margin: 0 0 14px; }\n  .km-desc h3 { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; color: #9B774D; margin: 22px 0 10px; }\n  .km-desc .spec-list { margin: 12px 0 0; }\n  .km-desc .spec-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .spec-row:first-child { border-top: 1px solid rgba(75,72,75,0.35); padding-top: 14px; }\n  .km-desc .spec-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.2px; font-weight: 600; color: #4B484B; margin-bottom: 6px; }\n  .km-desc .spec-value { font-weight: 600; font-size: 15px; color: #231F20; margin-bottom: 6px; line-height: 1.35; }\n  .km-desc .spec-meaning { color: #4B484B; font-size: 13px; line-height: 1.55; }\n  @media (min-width: 720px) {\n    .km-desc .spec-row { display: grid; grid-template-columns: 38% 30% 1fr; gap: 16px; align-items: start; padding: 12px 0; }\n    .km-desc .spec-label { margin-bottom: 0; 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}\n  .km-desc ul { list-style: none; padding: 0; margin: 10px 0 14px; }\n  .km-desc ul li { padding: 4px 0 4px 18px; position: relative; line-height: 1.55; }\n  .km-desc ul li:before { content: \"—\"; position: absolute; left: 0; color: #9B774D; font-weight: 500; }\n  .km-desc .compare-row { padding: 14px 0; border-bottom: 1px solid rgba(75,72,75,0.12); }\n  .km-desc .compare-row:last-child { border-bottom: 0; }\n  .km-desc .compare-name { font-weight: 600; color: #231F20; display: inline-block; padding-bottom: 1px; }\n  .km-desc .compare-orient { color: #4B484B; margin-top: 4px; font-size: 13px; line-height: 1.5; }\n  .km-desc .pull { font-style: italic; font-size: clamp(16px, 4.2vw, 22px); line-height: 1.4; color: #231F20; border-left: 2px solid #9B774D; padding: 0 0 0 16px; margin: 32px 0 16px; }\n  .km-desc .lede { font-size: clamp(16px, 4vw, 22px); line-height: 1.4; letter-spacing: -0.2px; font-weight: 400; color: #231F20; margin: 0 0 24px; }\n  .km-desc .warranty-note { font-size: 12px; color: #4B484B; font-style: italic; margin-top: 14px; }\n  .km-desc details { border-top: 1px solid rgba(75,72,75,0.18); margin: 0; padding: 0; }\n  .km-desc details:last-of-type { border-bottom: 1px solid rgba(75,72,75,0.18); }\n  .km-desc details \u003e summary { list-style: none; cursor: pointer; padding: 18px 32px 18px 0; position: relative; font-size: clamp(16px, 4.2vw, 20px); line-height: 1.3; font-weight: 500; color: #231F20; letter-spacing: -0.2px; }\n  .km-desc details \u003e summary::-webkit-details-marker { display: none; }\n  .km-desc details \u003e summary::after { content: \"+\"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 300; color: #9B774D; line-height: 1; }\n  .km-desc details[open] \u003e summary::after { content: \"−\"; }\n  .km-desc details \u003e summary:focus-visible { outline: 2px solid #9B774D; outline-offset: 4px; }\n  .km-desc details \u003e .acc-body { padding: 0 0 28px 0; }\n\u003c\/style\u003e\n\u003cdiv style=\"font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #231f20; line-height: 1.55; width: 100%; max-width: 100%; box-sizing: border-box; margin: 0; padding: 0; font-size: 16px; overflow-wrap: break-word; word-wrap: break-word; word-break: normal;\"\u003e\n\u003cdiv class=\"km-desc\"\u003e\n\u003cp class=\"lede\"\u003eA 4.28 ft³ zero-clearance wood-burning fireplace with double cast-iron-framed glass doors, an included 176 CFM blower, 25-inch maximum east-west log capacity, and 29 3\/4\" × 13 1\/2\" ceramic glass. EPA 2020 cordwood certified at 64% HHV efficiency and 1.6 g\/hr emissions, with up to 11-hour maximum burn and 95,000 BTU\/hr peak output. Built into a new or properly rebuilt framed chase as primary or supplemental heat for moderately to well-insulated homes in the 1,300–2,200 sq ft real-world range. Ships as a required component bundle — the fireplace body, Prairie Style faceplate, and classic moulded brick panels together as the manufacturer's required configuration; no buyer-configurable choices at order.\u003c\/p\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003eWho this is for\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003ch3\u003eRight buyer\u003c\/h3\u003e\n\u003cp\u003eOwners of moderately to well-insulated homes between roughly 1,300 and 2,200 sq ft who want a built-in wood-burning fireplace with the heat output and EPA 2020 cordwood compliance of a serious heating appliance, not a decorative-only fireplace. The 4.28 ft³ firebox is the largest in the Osburn wood fireplace lineup — primary-heat capability for larger spaces where the smaller Everest III's 3.04 ft³ firebox falls short.\u003c\/p\u003e\n\u003cp\u003eNew-construction buyers framing a fireplace chase from scratch per the install manual's dimensions, OR substantial-renovation buyers replacing an aging factory-built prefab fireplace where the existing chase framing and chimney can be verified or rebuilt to meet the Horizon's specific requirements. Replacement is not a drop-in: the old prefab unit must come out completely, the old chimney must be removed or replaced with an approved 8-inch UL 103 HT \/ ULC S629 system, and the existing chase framing must meet the published framing dimensions and clearances or be rebuilt to meet them. The unit cannot slide into an existing prefab firebox and cannot reuse an unapproved chimney or framing system. The Horizon is a zero-clearance fireplace — it ships with listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase when the manual's framing dimensions, clearances, air spaces, chimney system, and finish-material requirements are followed.\u003c\/p\u003e\n\u003cp\u003eBuyers who want a generous 25-inch maximum log capacity. Most firewood suppliers cut at 16-inch lengths, but the Horizon accepts substantially longer splits for buyers who cut their own wood or order custom lengths. Combined with the 17 7\/8\" firebox depth, north-south loading allows packed overnight cycles with maximum fuel mass — 11-hour burn time at low setting is genuinely achievable, not aspirational.\u003c\/p\u003e\n\u003cp\u003eBuyers who want the optional NightFlame ceramic glass upgrade — semi-transparent black ROBAX® glass that conceals the firebox when the fire is out and reveals the flame when burning. Available on the Horizon and a few other SBI premium models.\u003c\/p\u003e\n\u003cp\u003eBuyers who want forced-air heat distribution to a remote room. The optional Forced Air Kit redirects heat through insulated 6-inch flex ducting to a wall or ceiling grille in another room. For multi-room or zone heating in larger homes, the kit transforms the Horizon from a single-room heater into a multi-zone appliance.\u003c\/p\u003e\n\u003ch3\u003eWrong buyer\u003c\/h3\u003e\n\u003cp\u003eNot for buyers retrofitting an existing masonry fireplace — that is a wood insert's job, not a zero-clearance fireplace. Look at the Osburn Matrix 2700 or Osburn 3500 insert if you have a masonry opening and want to upgrade its heating performance.\u003c\/p\u003e\n\u003cp\u003eNot for buyers heating smaller spaces under 1,300 sq ft as primary heat. The 4.28 ft³ firebox at low burn rate still throws substantial BTU into the room — owners of small to mid-size homes often find the Horizon over-sized, with the room overheating before the burn cycle completes. For smaller spaces, step down to the Osburn Everest III (3.04 ft³ firebox, 85,000 BTU\/hr).\u003c\/p\u003e\n\u003cp\u003eNot for mobile-home installation. The Horizon is not approved for mobile-home installation in either the US or Canada per the manufacturer listing. Mobile-home owners need a different appliance category.\u003c\/p\u003e\n\u003cp\u003eNot for buyers who want set-and-forget heating. Wood fireplaces require active operation: lighting, monitoring flue temperature, closing the air at the right moment, deciding when to reload. The fireplace can leave usable coals by morning, but do not expect steady, high output through an entire night without a final reload.\u003c\/p\u003e\n\u003cp\u003eNot for buyers expecting 12+ hour overnight burns with full output. Non-catalytic appliances give you 8–10 hours of useful heat from a packed firebox of dense hardwood; for longer steady-output burns, a catalytic stove is the right tool. The 11-hour figure on this appliance is maximum burn time, not maximum useful heat time.\u003c\/p\u003e\n\u003cp\u003eNot for buyers sensitive to mechanical sound at higher blower settings. Multiple owner reviews note the included 176 CFM blower is audible at higher speeds. Sit near a running unit at a dealer before purchase if quiet operation is a priority.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAt a glance\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cdiv class=\"spec-list\"\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAppliance type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eZero-clearance wood fireplace\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eBuilt into a framed chase and connected to a Class A insulated chimney. Listed shielding and standoffs allow installation inside a combustible framed chase when the manual's required clearances, framing dimensions, and finish-material zones are followed. Not for retrofit into an existing masonry fireplace (that's an insert's job).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion technology\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNon-catalytic\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSecondary-air tubes reignite smoke gases. No catalyst to replace; simpler operation than a cat appliance but shorter low-and-slow burn times.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFirebox volume\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e4.28 ft³\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Largest firebox in the Osburn wood fireplace lineup. The EPA loading volume is the same 4.28 ft³ — the full firebox volume was used during emissions certification.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum heat output\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e95,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePeak output on dry cordwood, transient. Based on loading density of 15–20 lb\/ft³ and reloading intervals of 60–120 minutes. Sustained output across a burn cycle is substantially lower.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eTested output range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16,900–43,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer CSA B415.1-10 stack-loss method. The realistic operating band buyers should plan around.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eHeating range\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1,000–2,800 sq ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer's stated range. Real-world comfort sizing for primary heat is roughly 1,300–2,200 sq ft in moderate climates and lower in cold climates or older homes — depends on insulation, layout, climate, ceiling height, fuel quality, and installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage efficiency\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e64% HHV \/ 69% LHV\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003e70% LHV optimum efficiency at low burn rate; 69% HHV optimum heat-transfer efficiency. HHV is the federal standard.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eParticulate emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1.6 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eEPA 2020 cordwood certified (limit is 2.5 g\/hr) — well below the ceiling. Tested by an independent accredited laboratory.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eAverage CO emissions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e159 g\/hr\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eAverage carbon monoxide emissions per CSA B415.1-10 stack-loss method. Higher than the smaller Everest III at comparable output — a function of the larger firebox running at low burn rates where CO formation is higher.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum burn time\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUp to 11 hours\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufacturer maximum from a packed load of dry hardwood with the air shut down hard. Useful heat through a burn cycle is realistically 8–10 hours. The 11-hour maximum is achievable but represents the tail end of the burn with minimal useful heat output.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eRecommended log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e16 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec. Most firewood suppliers cut to this length.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMaximum log length\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e25 in east-west\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eGenerous capacity for buyers cutting their own wood or ordering custom lengths. The 17 7\/8\" firebox depth also accepts north-south loading for packed overnight cycles.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eSteel firebox, double cast-iron-framed glass doors\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eWelded steel firebox with moulded refractory brick lining and stainless-steel secondary-air tube system. Double cast-iron-framed ceramic glass doors with air-wash system. Limited lifetime warranty on the combustion chamber.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFaceplate\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003ePrairie Style, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eShips standard with Prairie Style faceplate — clean architectural lines that match contemporary interiors. Single faceplate option; no other faceplate styles available for this model.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBrick panels\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eClassic moulded, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eShips standard with classic moulded refractory brick panels lining the firebox interior. Provides thermal mass for heat retention and protects the steel firebox from direct flame contact. Single brick panel option for this model.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBaffle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eC-Cast or equivalent\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eRigid aluminosilicate fiber baffle rated above 2,000 °F.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eGlass\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e29 3\/4\" × 13 1\/2\", ceramic, double door\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eViewable glass surface, per Osburn's official spec. Ceramic glass with air-wash on each door, tested for high-temperature operation. Wide horizontal viewing area — substantially larger than the smaller Everest III (18 3\/4\" × 11\") and Solution 2.5 ZC II (22 1\/4\" × 13 1\/2\"). Optional NightFlame ceramic glass upgrade conceals the firebox when the fire is out.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eBlower\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e176 CFM, included\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eDistributes heat from the back of the unit into the room. Multiple owner reviews note the blower is audible at higher speeds.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eFlue connection\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e8 in\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eTop of the unit. Chimney must be 8 in interior diameter — larger than the 6-inch chimney used by the smaller Osburn Everest III. Type of chimney: CAN\/ULC S629 or UL 103 HT (2100 °F). Approved chimney brands include American Metal, DuraVent, Metal Fab, Olympia, Security Chimney, Selkirk, and SBI Venting Division (Ventis, Nexvent). Sold separately.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMinimum chimney height\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e15 ft\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePer manufacturer spec, subject to installer verification, certification label, draft conditions, and local code.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCombustion chamber\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e25 3\/8\" W × 17 7\/8\" D × 17\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eInside firebox dimensions per manufacturer spec. The 17 7\/8\" depth accepts loading over both width (east-west) and depth (north-south) — useful for packed overnight cycles. Loading is over width per the manufacturer's loading specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eDoor opening\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e33\" W × 12 3\/4\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eLoading door opening per manufacturer spec. Wide opening accepts long east-west loading easily; height is generous for a wide variety of split sizes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eOverall dimensions\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e50 3\/4\" W × 31 3\/4\" D × 43 3\/8\" H\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eOverall appliance dimensions per manufacturer spec. Plan ceiling clearance and chase top accordingly. Plan framing per the install manual.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eShipping weight\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e560 lb\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003ePlan for multi-person handling at delivery and installation. The optional Fireplace Carrying Handles assist with the curb-to-chase move. Confirm framing load and floor support before installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eMobile home approved\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eNot approved for mobile-home installation in either the US or Canada per manufacturer listing. Site-built homes only.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eStandards\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUL 127 \/ ULC-S610, EPA \/ ASTM WK47329 \/ CSA B415.1-10\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eSafety standards UL 127 (USA) and ULC-S610 (Canada) — factory-built fireplace standards. Emissions standards EPA \/ ASTM WK47329 (USA) and CSA B415.1-10 (Canada). EPA 2020 approved. Tested and listed by an accredited laboratory (CAN\/USA).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-label\"\u003eCountry of origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMade in Canada\u003c\/div\u003e\n\u003cdiv class=\"spec-meaning\"\u003eManufactured by Stove Builder International (SBI) in Saint-Augustin-de-Desmaures, Quebec.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere it can go\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003eThe Horizon is designed for installation in a permitted residential space — a living room, great room, family room, or any habitable room with adequate floor and wall framing to accept the zero-clearance chase and the 8-inch chimney system. Not approved for mobile or manufactured-home installation, drop-in replacement of an existing prefab\/decorative fireplace (the unit cannot slide into an existing prefab firebox and cannot reuse the old chimney or framing if those do not meet the published requirements), or outdoor or unconditioned-space installation. Replacement installs are possible only when the old fireplace and chimney are fully removed and the chase is verified or rebuilt to meet the required framing dimensions, clearances, and the approved 8-inch UL 103 HT \/ ULC S629 chimney requirement.\u003c\/p\u003e\n\u003cp\u003eThis is a zero-clearance unit — it ships with listed insulation, shielding, and standoffs that allow installation inside a framed combustible chase when the manual's framing dimensions, clearances, air spaces, chimney system, and finish-material requirements are followed. No masonry shell is required, but no surface of the firebox or chimney connection is permitted to touch combustible material outside the manual's listed zones.\u003c\/p\u003e\n\u003ch3\u003eClearances to combustibles\u003c\/h3\u003e\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eSurface\u003c\/span\u003e\u003cspan\u003eCanada\u003c\/span\u003e\u003cspan\u003eUSA\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eTop (platform to ceiling)\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e84\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side mantle to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e8\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e8\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustible side wall to unit\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e24\"\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e24\"\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 14px;\"\u003eThe 24-inch combustible side-wall clearance is larger than the 21-inch on the Everest III and 13-inch on the Solution 2.5 ZC II — this fireplace needs more lateral wall framing space. Verify chase width with your installer before committing.\u003c\/p\u003e\n\u003cp\u003eClearances apply identically in Canada and the USA per the manufacturer's clearance table. The certification label on the unit is the binding clearance for any installation and always overrides clearance figures published in any other media. Some appliances have been tested with a low ceiling — refer to the installation manual for reduced-ceiling configurations. Confirm the binding clearance figures with your installer before purchase.\u003c\/p\u003e\n\u003ch3\u003eFraming and finish\u003c\/h3\u003e\n\u003cp\u003eA framed chase built per the install manual's framing dimensions is required. The chase width must account for the fireplace body plus space for accessory routing — the install manual specifies adding space for the fresh-air intake pipe (if used) and forced-air pipe (if used) to the width of the chase, plus the thickness of any drywall panels or finishing material inside the chase around the fireplace. Plan the chase dimensions with the installer before framing begins.\u003c\/p\u003e\n\u003cp\u003eFinish material around the fireplace opening must be non-combustible within the manual's specified zones — typically a combination of cement board, stone or tile veneer, brick, or steel. Combustible material (wood mantles, decorative trim, paneling) is permitted outside those non-combustible zones at the specified distances. The Prairie Style faceplate and classic moulded brick panels ship standard with the appliance and form the finished interior edge between the fireplace opening and the surrounding wall material.\u003c\/p\u003e\n\u003ch3\u003eFloor protection \/ hearth extension\u003c\/h3\u003e\n\u003cp\u003eA hearth extension is required if the fireplace is installed directly on the floor or on a raised base of less than 4 inches. The hearth extension must be a continuous non-combustible material extending in front of the fireplace per the install manual's specifications. If the fireplace sits on a raised base of 4 inches or more, the hearth extension requirements may differ — refer to the install manual's hearth-extension section.\u003c\/p\u003e\n\u003ch3\u003eChimney and venting\u003c\/h3\u003e\n\u003cp\u003eAn 8-inch chimney flue system is required. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. Approved manufacturer\/brand combinations listed by SBI include American Metal HSS and HS, DuraVent DuraTech \/ DuraTech Canada DTC \/ DuraTech Premium \/ Dura Plus HTC \/ Dura Plus, Metal Fab Temp Guard, Olympia Rockford and Champion, Ventis (Olympia\/SBI Venting Division), Nexvent (SBI Venting Division), Security Chimney S-2100+, and Selkirk CF Sentinel \/ Super Pro 2100 \/ Super Vent 2100. Verify the chimney brand and component series with your installer before ordering venting.\u003c\/p\u003e\n\u003cp\u003eThe minimum chimney height is 15 feet, subject to installer verification, certification label, draft conditions, and local code. The chimney must extend at least 3 feet above the highest point of contact with the roof and at least 2 feet above any roof line or obstacle within 10 feet horizontally.\u003c\/p\u003e\n\u003ch3\u003eForced air kit (optional)\u003c\/h3\u003e\n\u003cp\u003eThe optional Forced Air Kit redirects heat from the fireplace through insulated 6-inch flex ducting to a remote room via a wall or ceiling grille. The manufacturer expects at least 25% heat transfer to other rooms when the fireplace is hot and the system is properly designed — shorter runs with fewer deviations work best, longer or overpowered systems can cool the combustion chamber too quickly and cause poor combustion. Use only the manufacturer-supplied forced air system; aftermarket fans and ducting are not safety-tested for this fireplace and present a fire risk.\u003c\/p\u003e\n\u003ch3\u003eOutside air\u003c\/h3\u003e\n\u003cp\u003eOutside air is not required in conventional homes — combustion air is normally available from room air. However, a 5-inch fresh-air intake register with airtight damper and 5-inch insulated flex pipe are strongly recommended for tight new-construction homes with mechanical ventilation, for homes with powerful range hoods or other mechanical exhaust appliances, and where local code requires it. A smoke detector and carbon monoxide detector are required in the room where the fireplace is installed.\u003c\/p\u003e\n\u003ch3\u003eCode compliance\u003c\/h3\u003e\n\u003cp\u003eCode compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the fireplace is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. Zero-clearance wood-burning fireplaces are a regulated category — confirm local requirements before purchasing, particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.\u003c\/p\u003e\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003eThis product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's in the box, what you'll add\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003ch3\u003eShips with the fireplace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHorizon zero-clearance fireplace with welded steel firebox, double cast-iron-framed glass doors, classic moulded refractory brick panel interior, and stainless-steel secondary-air tube assembly\u003c\/li\u003e\n\u003cli\u003ePrairie Style faceplate\u003c\/li\u003e\n\u003cli\u003eListed insulation, shielding, and standoffs that allow installation inside a framed combustible chase per the manual's required clearances, framing dimensions, air spaces, and finish-material zones\u003c\/li\u003e\n\u003cli\u003e176 CFM blower with rheostat speed control\u003c\/li\u003e\n\u003cli\u003eC-Cast or equivalent baffle\u003c\/li\u003e\n\u003cli\u003eOwner's installation and operation manual and product documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSold separately\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCode-compliant 8-inch Class A insulated chimney system — listed factory-built chimney from an approved manufacturer\/brand per the manufacturer's approved-chimney list; required venting components are sold separately\u003c\/li\u003e\n\u003cli\u003eHearth extension or floor protection sized to manual specifications, with continuous non-combustible material in front of the fireplace\u003c\/li\u003e\n\u003cli\u003eOptional Forced Air Kit (SBI VA4460) — distributes heat to a remote room via insulated ducting; pairs with 6\" × 25' insulated flex pipe (SBI AC01350)\u003c\/li\u003e\n\u003cli\u003eOptional Warm Air Circulation Grille (SBI AC01378) — modern grille design for the remote-room terminus of the forced air kit\u003c\/li\u003e\n\u003cli\u003eOptional NightFlame Semi-Transparent Black Glass set of 2 (SBI AC02770) — ROBAX® ceramic glass upgrade that conceals the firebox interior when the fire is out and reveals the flames when burning\u003c\/li\u003e\n\u003cli\u003eOptional Tempered Glass Hearth Pad 18\" × 50\" (SBI AC02760) — coordinated hearth extension finish\u003c\/li\u003e\n\u003cli\u003eOptional 5\" Fresh Air Intake Register with Airtight Damper (SBI AC01349), 5\" × 10' Insulated Flex Pipe for fresh air intake (SBI AC02093), 5\" × 25' Insulated Flex Pipe (SBI AC02094), and 5\" Air Intake Termination with Clamps (SBI AC01297) — for tight homes or where local code requires outside air\u003c\/li\u003e\n\u003cli\u003eOptional Fireplace Carrying Handles (SBI AC09200) — site handling aid during installation; not part of the finished assembly\u003c\/li\u003e\n\u003cli\u003eOptional 48\" Wood Storage with Finishing Trim (SBI AC02351) and Drawer and Tool Kit for Wood Storage Insert (SBI AC02353) — coordinated wood storage solution\u003c\/li\u003e\n\u003cli\u003eDigital moisture reader (SBI AC07835) and probe thermometer — strongly recommended; not optional in practice\u003c\/li\u003e\n\u003cli\u003eGlass cleaner (SBI AC07825), dry cleaning pad (SBI AC07824), gloves (SBI AC07820 or AC07822), fire starters — consumables for normal operation and maintenance\u003c\/li\u003e\n\u003cli\u003eInstallation by an authorized qualified technician (WETT, NFI, or CSIA certified) and a framing contractor familiar with zero-clearance fireplace chase construction — required for warranty coverage and often required by code, permit, or insurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow it actually performs\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003eThe 95,000 BTU\/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 16,900–43,000 BTU\/hr band per the CSA B415.1-10 stack-loss method.\u003c\/p\u003e\n\u003cp\u003eA realistic operating day, primary-heat use, cold climate: morning reload at sunrise produces a fast 60–90 minute warm-up and several hours of high output; mid-afternoon reload sustains heat through evening; a full pack at bedtime gives 8–10 hours of useful heat overnight, with the fireplace at coals by morning. In practical use with seasoned oak, maple, or hickory, expect 9–11 hours of useful heat from a packed load. With birch, pine, or softer wood, expect 6–7 hours.\u003c\/p\u003e\n\u003cp\u003eThe 4.28 ft³ firebox is the largest in the Osburn wood fireplace lineup. The 11-hour maximum burn time is genuinely achievable with the right wood — dense hardwood, properly seasoned, packed tight, air shut hard at the end of the load cycle. The smaller Everest III maxes at 8 hours from a 3.04 ft³ firebox; the Horizon's extra 1.24 ft³ of firebox volume translates directly to longer burn cycles and bigger fuel mass.\u003c\/p\u003e\n\u003cp\u003eThe 64% HHV average efficiency is in line with the larger SBI wood fireplaces — the Solution 4.5 ZC sister-brand model on the same chassis runs the same number. Optimum efficiency of 70% (LHV) at low burn rate is competitive within the EPA 2020 cordwood category. HHV is the federal standard.\u003c\/p\u003e\n\u003cp\u003eThe 25-inch maximum log capacity is generous for a 4.28 ft³ firebox and the largest of any Osburn wood fireplace. Most firewood suppliers cut to 16 inches, but buyers who cut their own wood or order custom lengths can take advantage of the wider firebox for longer splits. The 17 7\/8\" firebox depth also accepts loading over both width (east-west) and depth (north-south) — north-south loading allows packed overnight cycles with maximum fuel mass.\u003c\/p\u003e\n\u003cp\u003eThe included 176 CFM blower meaningfully improves heat distribution into the room and adjacent spaces. Air is distributed from behind the firebox out through the louvers. Multiple owner reviews note the blower is audible at higher speeds — comparable to a quiet bathroom exhaust fan at max. At low speeds the appliance is quieter, but the blower is part of the operating experience either way.\u003c\/p\u003e\n\u003cp\u003eWith the optional Forced Air Kit installed and properly sized, the manufacturer expects at least 25% heat transfer to a remote room — typically a bedroom on the same floor, or an adjacent zone of a great-room layout. The kit takes heat that would otherwise stay in the chase and routes it via 6-inch insulated flex pipe to a wall or ceiling grille in another room.\u003c\/p\u003e\n\u003cp\u003eThe 1.6 g\/hr particulate emissions is well below the EPA 2020 cordwood limit of 2.5 g\/hr — lower than the Everest III's 1.9 g\/hr and matches the Solution 4.5 ZC. The 159 g\/hr CO emissions is higher than the smaller Everest III — a function of the larger firebox running at low burn rates where CO formation is higher.\u003c\/p\u003e\n\u003cp\u003eAir-wash glass on the double doors stays largely clear during proper hot burns. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic tube appliances, not specific to Osburn, and it is the strongest signal that your wood is too wet or your burn is too cool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eTrade-offs to know\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eRequired component bundle, no buyer choices at order.\u003c\/strong\u003e The Horizon ships with the fireplace body, Prairie Style faceplate, and classic moulded brick panels as the manufacturer's required configuration — three SKUs ordered together as a package. No faceplate options, no door overlay choices, no brick panel alternatives. Customization is limited to where you place it, what hearth extension you specify, and which optional accessories you add (NightFlame glass, Forced Air Kit, hearth pad).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8-inch chimney requirement adds install cost.\u003c\/strong\u003e The Horizon's 8-inch chimney is larger than the 6-inch chimney used by the smaller Osburn Everest III and most freestanding wood stoves. 8-inch Class A chimney components run substantially more expensive than 6-inch components, and the larger flue requires more clearance and a larger chase footprint. Factor the chimney cost into the total project budget.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLarger combustible side-wall clearance.\u003c\/strong\u003e 24 inches of combustible side-wall clearance is more than the 21 inches required for the Everest III or 17 inches for many smaller models. The chase needs wider lateral framing space — verify the wall depth where the fireplace will be installed before committing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLower efficiency than freestanding stoves.\u003c\/strong\u003e A wood fireplace at 64% HHV average efficiency is realistically 5–10 efficiency points lower than freestanding wood stoves of comparable firebox volumes. The architectural integration of a built-in fireplace costs heat — less exposed appliance surface to radiate into the room, more heat lost into the chase. Choose a fireplace for the architectural look and the wall-integrated install; choose a freestanding stove if maximum efficiency per cord of wood is the priority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigher CO emissions than smaller siblings.\u003c\/strong\u003e 159 g\/hr CO is higher than the Everest III (per manufacturer published unit) — a function of the larger firebox running at low burn rates. Lower CO is achievable with hotter, shorter burn cycles, but that trades against the long-burn capability that makes the larger firebox worth buying. The CO figure remains well within typical wood-burning ranges.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eForced air kit is sold separately.\u003c\/strong\u003e While the 176 CFM blower is included, the Forced Air Kit that redirects heat to a remote room is an additional line item. For multi-room or multi-zone heating, plan the kit cost and the chase pre-routing for the 6-inch flex pipe before framing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNon-catalytic burn time.\u003c\/strong\u003e A non-cat appliance gives you simpler operation and no catalyst to replace, but you pay for it with shorter useful-heat windows. The 11-hour maximum claim is achievable on a packed load of dense hardwood with the air shut down hard; useful heat through that cycle is realistically 8–10 hours. For 12+ hour overnight burns with steady output, a catalytic or hybrid stove is the right tool.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlower noise at higher speeds.\u003c\/strong\u003e Multiple owner reviews flag the blower as noisy at higher settings. The blower is essential for distributing heat from the back of the chase into the room, but at higher CFM settings the mechanical sound is audible. Find the right balance between heat distribution and acoustic comfort for your space.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e560 lb shipping weight.\u003c\/strong\u003e Heavy enough to require multi-person handling at delivery; the curb-to-chase move is not a one- or two-person job. The optional Fireplace Carrying Handles assist with site handling but are not part of the finished assembly. Confirm framing load and floor support before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot mobile home approved.\u003c\/strong\u003e Not approved for mobile-home installation in either the US or Canada per manufacturer listing. Site-built homes only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZero-clearance ≠ retrofit into existing masonry fireplace.\u003c\/strong\u003e If you have an existing masonry fireplace and want to upgrade it to an EPA-certified heating appliance, you need a wood insert (Osburn Matrix 2700 or 3500), not a ZC fireplace. A zero-clearance fireplace replaces a framed decorative fireplace or installs in new chase construction — it does not retrofit into a masonry firebox.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReplacement installs require full teardown of the old unit and verification of the chase.\u003c\/strong\u003e Replacing an existing prefab fireplace is not a drop-in swap. The old fireplace and chimney must come out completely, the chase framing must be verified or rebuilt to the required framing dimensions and clearances, and a new approved 8-inch UL 103 HT \/ ULC S629 chimney must be installed. Plan the renovation scope and installer time accordingly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWood quality is not negotiable.\u003c\/strong\u003e The most common \"the fireplace doesn't heat\" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A digital moisture meter is the single best accessory for this fireplace.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGlass blackens at low burn rates.\u003c\/strong\u003e Universal to non-cat appliances. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this fireplace. Owners chasing always-clear glass on long, slow burns should look at catalytic technology — or to the optional NightFlame ceramic glass, which conceals the firebox when the fire is out and changes the glass appearance entirely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOperating reality\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eFirst burns.\u003c\/strong\u003e The first three to six fires release paint VOCs as the high-temperature stove paint cures. The smell can be strong during paint cure-in. Ventilate the room well, avoid prolonged exposure, and expect the odor to disappear after the first several hot burns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLighting.\u003c\/strong\u003e The manual describes top-down lighting as an effective method — largest splits on the bottom, smaller above, kindling on top, fire starter at the very top, light the top. Cleaner ignition, less smoke, faster to operating temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAir control.\u003c\/strong\u003e Full open at light-off, then gradually closed only after the load is fully engaged and stable secondary flames are established. A flue thermometer is strongly recommended — without one, you are guessing at draft, burn rate, and overfire risk. The manual specifies keeping flue temperature in the comfort zone of 250–475 °F at steady state, with 700 °F acceptable transiently during start-up. Do not maintain excessive temperatures over long periods.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReload cadence.\u003c\/strong\u003e 3–5 hours between reloads in active high-output use; 8–10 hours for a final overnight pack with the air shut hard. Open the air, wait 30 seconds, open the door slowly to avoid spilling smoke into the room. Place at least three pieces on the fire at a time so that the heat radiated from one piece helps ignite the pieces next to it. Loading is over width (east-west) per the manufacturer's loading specification. The 17 7\/8\" firebox depth also accepts north-south loading for packed overnight cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlower management.\u003c\/strong\u003e The blower starts automatically via the included heat sensor when the fireplace reaches operating temperature, typically about an hour after cold start. Turn the rheostat to LO or HI to set speed; the sensor handles on\/off. Turn the blower OFF before opening the door fully — otherwise it can blow ash out of the firebox into the room. Find the right blower speed for your acoustic comfort — multiple owners run the blower at lower speeds to reduce mechanical sound at the cost of some heat distribution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGlass cleaning.\u003c\/strong\u003e Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the fireplace is hot, and do not strike or slam the glass doors shut.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoor alignment and gasket replacement.\u003c\/strong\u003e The door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. The double-door design has gaskets on both doors and at the meeting edge — test all locations. Plan on gasket replacement every 3–5 seasons in regular use. Replacement gasket kits are available through the SBI parts network.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnnual chimney sweep.\u003c\/strong\u003e Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect monthly during the heating season until you know your creosote-formation rate; if buildup reaches 1\/8 inch, sweep immediately. Heavy burners or those with marginally seasoned wood may need mid-season cleaning. The 8-inch chimney brushes and rods are larger and more expensive than 6-inch equivalents — factor into operating costs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWood seasoning.\u003c\/strong\u003e Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier \"seasoned\" claims — use a digital moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufactured logs (composite firelogs).\u003c\/strong\u003e Per the manual, only manufactured logs made of 100% wood residues are permitted (no logs containing chemicals or accelerants). Start with one log and gradually increase; never put more than four logs in at a time; logs must be average size and not exceed 8 inches in diameter. Manufactured logs release a large heat output over a short period — over-loading risks damaging the firebox. This four-log limit applies only to manufactured\/composite firelogs and not to normal split cordwood.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlower maintenance.\u003c\/strong\u003e Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn\/SBI dealers and parts channels if needed years out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat never to burn.\u003c\/strong\u003e Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, pallets, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, kerosene, diesel fuel, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty and service\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cp\u003eThe Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.\u003c\/p\u003e\n\u003ch3\u003eCoverage by component\u003c\/h3\u003e\n\u003cdiv class=\"data-head\"\u003e\n\u003cspan\u003eComponent\u003c\/span\u003e\u003cspan\u003eParts\u003c\/span\u003e\u003cspan\u003eLabor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCombustion chamber welds, cast-iron door frame\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eCeramic glass, plating manufacturing defects\u003c\/span\u003e\u003cspan class=\"data-val\"\u003eLifetime\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSurrounds, heat shields, faceplate, trims, C-Cast baffle, secondary air tubes\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e7 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eHandle assembly, glass retainers, air control mechanism\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e3 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eSteel firebox components\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e5 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eBlower, heat sensors, switches, rheostat, wiring, electronics\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e2 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003ePaint (peeling), gaskets, insulation, refractory bricks, ceramic fiber blankets, and other options\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e1 yr\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"data-row\"\u003e\n\u003cspan class=\"data-label\"\u003eReplacement parts under warranty\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e90 d\u003c\/span\u003e\u003cspan class=\"data-val\"\u003e—\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 14px;\"\u003eA one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.\u003c\/p\u003e\n\u003cp\u003eWarranty claims are made through your Osburn dealer and remain subject to SBI\/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this fireplace and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, faceplate, and venting components are openly available at fair prices through multiple parts vendors.\u003c\/p\u003e\n\u003cp class=\"warranty-note\"\u003eOsburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.\u003c\/p\u003e\n\u003cp class=\"warranty-note\"\u003eCoverage details can change by component and warranty revision; the current Osburn warranty controls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCompare with\u003c\/summary\u003e\n\u003cdiv class=\"acc-body\"\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eOsburn Everest III\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller sibling in the Osburn wood fireplace line — 3.04 ft³ overall firebox volume, 2.61 ft³ EPA loading volume, 85,000 BTU\/hr maximum output, 25,900–78,200 BTU\/hr tested band, 750–2,500 sq ft heating range, 65% HHV \/ 71.6% optimum efficiency, 1.9 g\/hr particulate emissions (higher than Horizon's 1.6), 8-hour max burn, 20-inch log capacity, 6-inch chimney, 525 lb shipping weight, 18 3\/4\" × 11\" glass (smaller than Horizon's 29 3\/4\" × 13 1\/2\"). Two buyer-configurable choices at order (faceplate Traditional\/Modern and door overlay Black\/Brushed Nickel) vs Horizon's required component bundle. Retractable cast-iron door architecture; mobile-home approved in Canada (Horizon not mobile-home approved). Choose the Everest III for smaller homes, retractable-door architecture, two configurable design choices at order, 6-inch chimney's lower install cost, and Canada mobile-home compatibility; choose the Horizon for the larger 4.28 ft³ firebox, 25-inch logs, longer 11-hour burn, primary heat across larger spaces up to 2,800 sq ft, the wider horizontal glass viewing area, and lower particulate emissions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 4.5\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSister-brand counterpart from SBI's Enerzone line — same chassis as the Horizon, same 4.28 ft³ firebox, same 95,000 BTU\/hr maximum output, same 16,900–43,000 BTU\/hr tested band, same 64% HHV \/ 70% optimum efficiency, same 1.6 g\/hr particulate emissions, same 159 g\/hr CO, same 11-hour max burn, same 25-inch log capacity, same 8-inch chimney, same 176 CFM included blower, same 560 lb shipping weight, same 29 3\/4\" × 13 1\/2\" glass, same not-mobile-home-approved. Buyer-configurable louver choice at order (Traditional default or Rustic upgrade). Different brand finish and faceplate styling. Choose the Solution 4.5 ZC for the louver configuration choice and the Enerzone brand finish; choose the Horizon for the Prairie Style faceplate styling and the Osburn brand and dealer network.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eValcourt FP15A Waterloo\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSister-brand counterpart from SBI's Valcourt line — same chassis class as the Horizon, 4.3 ft³ firebox, 1,000–2,800 sq ft heating range, 1.6 g\/hr particulate emissions, 11-hour max burn, 8-inch chimney, included blower, EPA 2020 approved. Four buyer-configurable faceplate louver choices at order — substantially more configuration flexibility than the Horizon's single Prairie Style faceplate. Arched faceplate aesthetic vs the Horizon's clean horizontal lines. Valcourt is SBI's premium-positioned brand with Quebec-heritage design language. Choose the FP15A Waterloo for the four faceplate louver options, the arched aesthetic, and Valcourt's premium brand positioning; choose the Horizon for the Prairie Style faceplate's contemporary horizontal lines, Osburn's broader US dealer network, and typically lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003eEnerzone Solution 2.5 II\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003eSmaller Enerzone wood fireplace — 2.5 ft³ overall firebox volume, 1.94 ft³ EPA loading volume, 80,000 BTU\/hr maximum output, 12,700–60,700 BTU\/hr tested band, 750–2,200 sq ft heating range, 64% HHV \/ 68% LHV efficiency, 1.2 g\/hr particulate emissions (lower than Horizon's 1.6), 98 g\/hr CO (lower than Horizon's 159), 8-hour max burn, 20-inch log capacity, 6-inch chimney, 523 lb shipping weight, 22 1\/4\" × 13 1\/2\" glass (smaller than Horizon's 29 3\/4\" × 13 1\/2\"). Included cast-iron andirons, sealed double-door design. Choose the Solution 2.5 ZC II for smaller homes, lower emissions, lower CO, smaller chase footprint, 6-inch chimney's lower install cost, and the Enerzone brand finish; choose the Horizon for the larger 4.28 ft³ firebox, 25-inch logs, longer 11-hour burn, primary heat across larger spaces up to 2,800 sq ft, the wider horizontal glass viewing area, and the Osburn brand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"compare-row\"\u003e\n\u003cspan class=\"compare-name\"\u003ePacific Energy FP30 LE\u003c\/span\u003e\n\u003cdiv class=\"compare-orient\"\u003ePremium cross-brand competitor in the EPA-certified large zero-clearance wood fireplace category, built by Pacific Energy in British Columbia. 3.0 ft³ firebox (smaller than 4.28), 74% optimum efficiency, 1.79 g\/hr emissions, 22-inch maximum log capacity, two included 80 CFM temperature-actuated blowers, cast-iron door, EPA 2020 certified with Pacific Energy's Extended Burn Technology (EBT) and heavy-gauge floating firebox build. No retractable-door architecture; standard sealed-door design. Significantly higher purchase price than the Horizon. Choose the Pacific Energy FP30 LE for higher optimum efficiency, the Pacific Energy floating-firebox build philosophy, and the established premium cross-brand reputation; choose the Horizon for the larger 4.28 ft³ firebox, 25-inch log capacity vs 22-inch, wider horizontal glass viewing area, included 176 CFM blower, and lower purchase price.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cp class=\"pull\"\u003eThe largest Osburn wood fireplace — built for serious primary heating in larger homes with 25-inch log capacity, 11-hour burn time, and the widest horizontal glass viewing area in the lineup. For buyers building or renovating a chase from scratch and want a true heating fireplace, not a decorative one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Osburn","offers":[{"title":"Default Title","offer_id":49277247324353,"sku":"OB04010+OA10631+AC02360","price":7299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/osburn-horizon-wood-fireplace-front-ob04010_f6dfaffa-6c3b-4264-a135-72ca2a4a2694.webp?v=1748291928"},{"product_id":"tinted-tempered-glass-hearth-pad-10-mm-54-x-46-3-4","title":"SBI Tinted Tempered Glass Hearth Pad","description":"\u003cp\u003eThe Tinted Tempered Glass Hearth Pad 10 mm - 54\" x 46 3\/4\" offers a clean, modern way to protect your flooring beneath a freestanding wood or pellet stove. Made by SBI, this durable tinted glass hearth pad is designed for appliances that require ember protection only and do not require additional thermal protection or a specific R-value.\u003c\/p\u003e\n\u003cp\u003eIts 10 mm tempered glass construction provides a strong, impact-resistant surface, while the dark tinted finish adds a refined look that blends well with contemporary, rustic, or traditional stove installations. The polished, non-sharp edges and corners give the hearth pad a smooth, finished appearance, making it both functional and attractive in the living space.\u003c\/p\u003e\n\u003cp\u003eWith its large 54\" x 46 3\/4\" size, this SBI glass hearth pad is a practical choice for protecting combustible flooring from sparks and embers during stove loading. It is ideal for homeowners who want reliable floor protection without covering up the style of their room.\u003cbr\u003e\u003c\/p\u003e","brand":"Sbi","offers":[{"title":"Default Title","offer_id":49287785840833,"sku":"AC02758","price":405.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/sbi-tinted-tempered-glass-hearth-pad-10mm-54x46.75-ac02758.webp?v=1748371343"},{"product_id":"sbi-glass-ash-lip","title":"SBI Glass ash lip","description":"\u003cp\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eEnhance your wood stove with the Glass Ash Lip, designed to prevent ash and debris from escaping during loading.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIts sleek, clear glass design not only adds a modern touch but also simplifies maintenance, keeping your hearth area clean and safe.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCompatible with Osburn 1700, 2000, and 3300 models, this durable accessory combines functionality with style.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sbi","offers":[{"title":"Default Title","offer_id":49289069396161,"sku":"OA10132","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/sbi-glass-ash-lip-oa10132.webp?v=1748293214"},{"product_id":"sbi-equiss-freestanding-log-holder","title":"SBI Equiss freestanding log holder","description":"\u003cp\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eThe Equiss Freestanding Log Holder offers a sleek and practical solution for storing firewood.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCrafted from high-quality steel and manufactured in Canada, its compact design features integrated handles for easy transport.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAssembly is straightforward—simply intersect the two panels.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eA cuttable rubber band is included to protect your floor surface and provide a polished finish.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eWhen not in use, this log holder can be easily disassembled for convenient storage, making it an ideal accessory for maintaining a tidy and stylish hearth area.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sbi","offers":[{"title":"Default Title","offer_id":49289116516545,"sku":"AC02350","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/sbi-equiss-freestanding-log-holder-ac02350.webp?v=1748370631"},{"product_id":"sbi-wood-storage","title":"SBI Wood Storage","description":"\u003cp\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eMaximize your hearth's functionality and style with this versatile 48\" wood storage unit.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eDesigned for both built-in and freestanding setups, it can be positioned vertically or horizontally to suit your space.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCrafted from durable 14-gauge powder-coated steel, it accommodates logs up to 18\" in length.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eThe included finishing trim ensures a seamless integration into any décor, while concealed wooden blocks protect your floors.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eOptional accessories, like a storage drawer, enhance its utility, making it a perfect blend of form and function for your wood-burning needs.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sbi","offers":[{"title":"Default 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Just reach out — we’ve got you covered.\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"511\" data-start=\"488\"\u003e \u003c\/p\u003e","brand":"Kaminos","offers":[{"title":"Small \/ Original","offer_id":49316016095425,"sku":"","price":1231.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ Bar iron","offer_id":49316016292033,"sku":"","price":1648.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ Essential","offer_id":49316016488641,"sku":"","price":1219.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ Inline","offer_id":49316016685249,"sku":"","price":2103.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ Urban","offer_id":49316017275073,"sku":"","price":775.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ Inset","offer_id":49316016881857,"sku":"","price":2543.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ Legacy","offer_id":49316017078465,"sku":"","price":1234.0,"currency_code":"USD","in_stock":true},{"title":"Small \/ ZC trimline","offer_id":49316017471681,"sku":"","price":1583.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Original","offer_id":49316016160961,"sku":"","price":1413.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Bar iron","offer_id":49316016357569,"sku":"","price":2005.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Essential","offer_id":49316016554177,"sku":"","price":1528.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Inline","offer_id":49316016750785,"sku":"","price":2328.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Urban","offer_id":49316017340609,"sku":"","price":775.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Inset","offer_id":49316016947393,"sku":"","price":2773.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ Legacy","offer_id":49316017144001,"sku":"","price":1325.0,"currency_code":"USD","in_stock":true},{"title":"Medium \/ ZC trimline","offer_id":49316017537217,"sku":"","price":1657.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Original","offer_id":49316016226497,"sku":"","price":1550.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Bar iron","offer_id":49316016423105,"sku":"","price":2267.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Essential","offer_id":49316016619713,"sku":"","price":1647.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Inline","offer_id":49316016816321,"sku":"","price":2601.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Urban","offer_id":49316017406145,"sku":"","price":775.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Inset","offer_id":49316017012929,"sku":"","price":3046.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ Legacy","offer_id":49316017209537,"sku":"","price":1412.0,"currency_code":"USD","in_stock":true},{"title":"Large \/ ZC trimline","offer_id":49316017602753,"sku":"","price":1825.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0798\/3854\/4065\/files\/original-traditional-fireplace-doors.webp?v=1748978501"},{"product_id":"rustic-fireplace-doors","title":"Rustic fireplace doors","description":"\u003cp\u003eHandcrafted rustic fireplace doors for masonry fireplaces, designed to bring bold character and timeless charm to any hearth. 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and is compatible with both natural gas and propane.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable in sizes ranging from 18″ to 42″, with multiple ignition options to suit your installation needs.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon Gas Logs","offers":[{"title":"18 inch \/ Manual Safety Pilot","offer_id":49366665461953,"sku":"","price":1271.0,"currency_code":"USD","in_stock":true},{"title":"18 inch \/ Millivolt","offer_id":49366690398401,"sku":null,"price":1675.0,"currency_code":"USD","in_stock":true},{"title":"18 inch \/ Electronic Ignition 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rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon Gas Logs","offers":[{"title":"18 inch \/ Manual Safety Pilot","offer_id":49367481712833,"sku":"","price":1217.0,"currency_code":"USD","in_stock":true},{"title":"18 inch \/ Electronic Ignition (Outdoor)","offer_id":49367481745601,"sku":"","price":2314.0,"currency_code":"USD","in_stock":true},{"title":"24 inch \/ Manual Safety Pilot","offer_id":49367481778369,"sku":"","price":1509.0,"currency_code":"USD","in_stock":true},{"title":"24 inch \/ Electronic Ignition (Outdoor)","offer_id":49367481811137,"sku":"","price":2606.0,"currency_code":"USD","in_stock":true},{"title":"30 inch \/ Manual Safety Pilot","offer_id":49367481843905,"sku":"","price":2073.0,"currency_code":"USD","in_stock":true},{"title":"30 inch \/ Electronic Ignition 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Grand Canyon Arizona Weathered Oak Vented Gas Log Set. \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eEach log is hand-cast from real Arizona oak and meticulously painted to capture natural textures and weathered details.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eDesigned for vented, double-sided fireplaces, this set offers a realistic flame presentation and is compatible with both natural gas and propane.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable in sizes ranging from 18″ to 60″, with multiple ignition options to suit your installation needs.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon Gas Logs","offers":[{"title":"18 inch \/ Manual Safety Pilot","offer_id":49367507271873,"sku":"","price":1216.0,"currency_code":"USD","in_stock":true},{"title":"18 inch \/ Millivolt","offer_id":49367507304641,"sku":"","price":1620.0,"currency_code":"USD","in_stock":true},{"title":"18 inch \/ Electronic Ignition (Hardwire)","offer_id":49367507337409,"sku":"","price":2383.0,"currency_code":"USD","in_stock":true},{"title":"24 inch \/ Manual Safety Pilot","offer_id":49367507370177,"sku":"","price":1528.0,"currency_code":"USD","in_stock":true},{"title":"24 inch \/ Millivolt","offer_id":49367507402945,"sku":"","price":1930.0,"currency_code":"USD","in_stock":true},{"title":"24 inch \/ Electronic Ignition (Hardwire)","offer_id":49367507435713,"sku":"","price":2695.0,"currency_code":"USD","in_stock":true},{"title":"30 inch \/ Manual Safety 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Millivolt","offer_id":49367507697857,"sku":"","price":3199.0,"currency_code":"USD","in_stock":true},{"title":"42 inch \/ Electronic Ignition (Hardwire)","offer_id":49367507730625,"sku":"","price":3968.0,"currency_code":"USD","in_stock":true},{"title":"48 inch \/ Manual Safety Pilot","offer_id":49367507763393,"sku":"","price":3508.0,"currency_code":"USD","in_stock":true},{"title":"48 inch \/ Millivolt","offer_id":49367507796161,"sku":"","price":3911.0,"currency_code":"USD","in_stock":true},{"title":"48 inch \/ Electronic Ignition (Hardwire)","offer_id":49367507828929,"sku":"","price":4685.0,"currency_code":"USD","in_stock":true},{"title":"60 inch \/ Manual Safety Pilot","offer_id":49367507861697,"sku":"","price":4031.0,"currency_code":"USD","in_stock":true},{"title":"60 inch \/ Millivolt","offer_id":49367507894465,"sku":"","price":4433.0,"currency_code":"USD","in_stock":true},{"title":"60 inch \/ Electronic Ignition 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realistic flame presentation and is compatible with both natural gas and propane.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable in sizes ranging from 18″ to 42″, with multiple ignition options to suit your installation needs.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon Gas Logs","offers":[{"title":"18 inch \/ Electronic Ignition (Outdoor)","offer_id":49367551869121,"sku":"","price":2252.0,"currency_code":"USD","in_stock":true},{"title":"21 inch \/ Electronic Ignition (Outdoor)","offer_id":49367551901889,"sku":"","price":2413.0,"currency_code":"USD","in_stock":true},{"title":"24 inch \/ Electronic Ignition 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transition-colors duration-100 ease-in-out\"\u003eEach log is hand-cast from real blue pine found in Northern Arizona and meticulously painted to capture natural textures and weathered details.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eDesigned for vented fireplaces, this set offers a realistic flame presentation and is compatible with both natural gas and propane.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable in sizes ranging from 18″ to 30″, with multiple ignition options to suit your installation needs.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon 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compatible with both natural gas and propane.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable in sizes ranging from 18″ to 30″, with multiple ignition options to suit your installation needs.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon Gas Logs","offers":[{"title":"18 inch \/ Electronic Ignition (Outdoor)","offer_id":49367594729665,"sku":"","price":2252.0,"currency_code":"USD","in_stock":true},{"title":"18 inch \/ Manual Safety Pilot","offer_id":49367594762433,"sku":"","price":1155.0,"currency_code":"USD","in_stock":true},{"title":"21 inch \/ Electronic Ignition 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Colorado River and meticulously painted to capture natural textures and weathered details.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eDesigned for vented, double-sided fireplaces, this set offers a realistic flame presentation and is compatible with both natural gas and propane.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eAvailable in sizes ranging from 18″ to 42″, with multiple ignition options to suit your installation needs.\u003c\/span\u003e \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIncludes a 10 lb. bag of black volcanic rock for added realism and heat dispersion.\u003c\/span\u003e\u003c\/p\u003e","brand":"Grand Canyon Gas Logs","offers":[{"title":"18 inch \/ Electronic Ignition 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