By Osburn

Osburn Stratford II Wood Fireplace

$5,379.00
$5,379.00
Door overlay: Black
Faceplate: Traditional
Availability: Low stock: 5 left
SKU: OB04007+OA10610+OA10255
Osburn Stratford II Wood Fireplace
$5,379.00
$5,379.00

At a glance

  • Type: Wood fireplace, EPA 2020 certified
  • Heats: 750–2,200 sq ft
  • Heat output: 80,000 BTU/hr
  • Log length: 16 in east-west
  • Efficiency: 64% HHV / 68% LHV
  • Burn time: Up to 8 hours
  • Chimney: 6 in

Description

The Osburn Stratford II Wood Fireplace is an EPA 2020 certified wood fireplace for 750 to 2,200 sq ft. It burns up to 8 hours on a load and takes a 6-inch chimney.

Who it's for

Right buyer. Owners 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.

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.

How it performs

The 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.

Good to know

  • Two buyer-configurable choices at order — faceplate and door overlay. Faceplate (Traditional default or Modern upgrade) and door overlay (Black default or Brushed Nickel upgrade).
  • Faceplate fit can be finicky.
  • Smaller firebox than the Horizon. 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).

Specifications

Dimensions

Dimensions from the specification sheet

Measurement Value
Overall height 40‑5/8"
Overall width 36‑3/4"
Overall depth 29‑3/4"
Door opening 25‑3/8 W x 10‑1/2 H
Firebox, W x H x D 20‑3/8 W x 12‑1/8 H x 12‑7/8 D

Dimensions

Measurement Value
Firebox volume 2.5 ft³ overall / 1.94 ft³ EPA
Glass 22 1/4" x 12 1/2", ceramic, double door
Minimum chimney height 15 ft
Door opening 25 3/8" W x 10 1/2" H
Overall dimensions 36 3/4" W x 29 3/4" D x 40 5/8" H
Shipping weight 468 lb

Where it can go

The 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.

This 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.

Clearances to combustibles

Floor protection

A 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.

Clearances

The 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.

Clearances 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.

Documents

Details

Appliance type Zero-clearance wood fireplace
Combustion technology Non-catalytic
Firebox volume 2.5 ft³ overall / 1.94 ft³ EPA
Maximum heat output 80,000 BTU/hr
Tested output range 12,700–60,700 BTU/hr
Heating range 750–2,200 sq ft
Average efficiency 64% HHV / 68% LHV
Particulate emissions 1.2 g/hr
Average CO emissions 98 g/hr
Maximum burn time Up to 8 hours
Recommended log length 16 in east-west
Maximum log length 20 in east-west
Construction Steel firebox, double cast-iron-framed glass doors, cast-iron andirons
Faceplate Configured at order
Door overlay Configured at order
Andirons Cast iron, included
Baffle C-Cast or equivalent
Glass 22 1/4" x 12 1/2", ceramic, double door
Blower 176 CFM, included
Flue connection 6 in
Minimum chimney height 15 ft
Combustion chamber 20 3/8" W x 12 7/8" D x 12 1/8" H
Door opening 25 3/8" W x 10 1/2" H
Overall dimensions 36 3/4" W x 29 3/4" D x 40 5/8" H
Shipping weight 468 lb
Mobile home approved No
Standards UL 127 / ULC-S610, EPA / CSA B415.1‑10
Country of origin Made in Canada
Model OB04007
Manufacturer Osburn, by Stove Builder International (SBI), Quebec, Canada
Certification UL 127, ULC S610; EPA
Warranty Limited lifetime
Specification source SBI specification table as published by Osburn dealers (ruralenergy.com), 2026

Warranty

A 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.

Warranty 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.

Osburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.

Coverage details can change by component and warranty revision; the current Osburn warranty controls.

Heat

From the specification sheet
Spec Value
Firebox volume 2.5 cu ft
Spec Value What it means
Combustion technology Non-catalytic Secondary-air tubes reignite smoke gases. No catalyst to replace; simpler operation than a cat appliance but shorter low-and-slow burn times.
Maximum heat output 80,000 BTU/hr Peak 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.
Heating range 750–2,200 sq ft Manufacturer'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.
Average efficiency 64% HHV / 68% LHV 70% LHV optimum efficiency at low burn rate; 68% HHV optimum heat-transfer efficiency. HHV is the federal standard.
Particulate emissions 1.2 g/hr EPA 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.
Average CO emissions 98 g/hr Average 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.
Maximum burn time Up to 8 hours Manufacturer 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.
Recommended log length 16 in east-west Per manufacturer spec. Most firewood suppliers cut to this length.
Maximum log length 20 in east-west Longer logs go east-west across the 20 3/8" firebox width. Loading is over width per the manufacturer's loading specification.
Combustion chamber 20 3/8" W x 12 7/8" D x 12 1/8" H Inside firebox dimensions per manufacturer spec. Loading is over width (east-west) per the manufacturer's specification.

Choices and prices

Options

The unit price is Osburn's 2026 list price for the wood fireplace alone. Options sold on this page add to it; those marked on request we add to your order by hand.

Door overlay
Door overlay Part Price
BLACK DOOR OVERLAY OA10610 $165
BRUSHED NICKEL DOOR OVERLAY OA10612 $440
FIRESCREEN DOOR (on request) AC01275 $330
Faceplate and trim
Faceplate and trim Part Price
TRADITIONAL FACEPLATE OA10255 $715
MODERN FACEPLATE OA10256 $770
HEAT SHIELD FOR SURROUND/SHELF (on request) AC01223 $130
Fresh air
Fresh air Part Price
4''Ø FRESH AIR INTAKE REGISTER WITH AIRTIGHT DAMPER (on request) AC01347 $280
4"Ø X 25' INSULATED FLEX PIPE FOR FRESH AIR (on request) AC01359 $200
4''Ø X 10' INSULATED FLEX PIPE FOR FRESH AIR INTAKE (on request) AC02091 $75
Other options
Other options Part Price
6"Ø X 25' INSULATED FLEX PIPE FOR FORCED AIR KIT (on request) AC01350 $225
FORCED AIR KIT (on request) AC01374 $960
TRADITIONAL GRAVITY KIT (on request) AC01375 $440
MODERN GRAVITY KIT WITH ADJUSTABLE PIPES (on request) AC01389 $660
TEMPERED GLASS HEARTH PAD 10 mm - 18" X 50" (on request) AC02760 $399
FIREPLACE CARRYING HANDLES (on request) AC09200 $100

What arrives

  • Stratford 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
  • Configured at order with required faceplate selection — Traditional (default) or Modern (upgrade)
  • Configured at order with required door overlay selection — Black (default) or Brushed Nickel (upgrade)
  • Cast-iron andirons
  • 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
  • 176 CFM blower with rheostat speed control and heat sensor for automatic cycling
  • C-Cast or equivalent baffle
  • Owner's installation and operation manual and product documentation
Sold separately
  • Code-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
  • Hearth extension or floor protection sized to manual specifications, with continuous non-combustible material extending at least 16 inches in front of the appliance
  • Optional Forced Air Kit (SBI AC01374) — distributes heat to a remote room via insulated ducting; pairs with 6" × 25' insulated flex pipe (SBI AC01350)
  • Optional 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
  • Optional Firescreen Door (SBI AC01275) — for occasional door-open viewing where local code permits; never leave the fireplace unattended with the firescreen in place
  • Optional Heat Shield for Surround/Shelf (SBI AC01223) — additional shielding for shelving installed above or beside the fireplace
  • Optional Tempered Glass Hearth Pad 18" × 50" (SBI AC02760) — coordinated hearth extension finish
  • Optional 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
  • Optional Fireplace Carrying Handles (SBI AC09200) — site handling aid during installation; not part of the finished assembly
  • Optional 48" Wood Storage with Finishing Trim (SBI AC02351) and Drawer and Tool Kit for Wood Storage Insert (SBI AC02353) — coordinated wood storage solution
  • Digital moisture reader (SBI AC07835) and probe thermometer — strongly recommended; not optional in practice
  • Glass cleaner (SBI AC07825), dry cleaning pad (SBI AC07824), gloves (SBI AC07820 or AC07822), fire starters — consumables for normal operation and maintenance
  • Replacement Silicone and 5/8" × 8' Black Door Gasket Kit (SBI AC06500) — gasket replacement when the paper-strip test fails
  • Installation 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

Installation

Chimney requirements from the specification sheet

Requirement Value
Flue 6 in
Chimney type factory-built chimney per the manual

A 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.

The 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.

Outside air

Outside 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.

Codes and approvals

Code 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.

California Proposition 65

This 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.

Planning the install

  • Check with your building department and insurer: wood appliances need a permit in most places and an inspection after installation.
  • The chimney is the other half of the system. It is sold separately and quoted from your installer's plan.
  • Clearances and floor protection come from the manual and depend on the pipe and shields you choose. Send us your plan and we will check it.
  • Burn seasoned wood below 20 percent moisture. Wet wood is the cause of most complaints about any wood stove.
  • Special-order goods ship by freight.

Questions
How does it compare with the other Osburn models?
  • Osburn Everest II Mid-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.
  • Osburn Horizon Wood Fireplace Larger 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. Osburn Everest III Mid-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. Enerzone Solution 2.5 II Sister-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. Valcourt FP10R Lafayette II Sister-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. Pacific Energy FP25 LE Premium 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.
What chimney does it take?

A 6-inch flue: a listed factory-built chimney rated UL 103 HT in the US or ULC S629 in Canada, or a lined masonry chimney in good repair. The connector pipe and chimney are quoted from your installer's plan.

Does it need a blower?

No. Every Osburn heats by radiation and natural convection. The optional blower moves warm air into the room faster and helps in a larger or open space; it needs a 120-volt outlet.

Can I install it myself?

Many owners do the placement and the pipe with the manual in hand, but the chimney, the permit and the inspection are where an installer earns the fee. Insurance usually requires the inspection.

Can I return it?

Stoves ship by freight. Confirm the model and the options with us before you order, and contact us before returning anything.

What wood should I burn?

Seasoned hardwood, split and dried a year or more, below 20 percent moisture. Wet wood smokes, coats the chimney with creosote and makes a poor fire.

If you have any questions about this product, please let us know by filling out the form below, and we will contact you as soon as possible.