At a glance
- Type: Trim and finishing collar, part of the DuraTech chimney system
- Diameters: Universal, 5", 6", 7" and 8"
- Listing: c-UL-us listed to UL 103 HT
- Clearance: 2" to combustibles
- Made by: DuraVent
Description
Finishes the opening where the chimney passes a ceiling or support. DuraTech 5 to 8 inch is DuraVent's double-wall, insulated all-fuel chimney, c-UL-us listed to UL 103 HT with a 2-inch clearance to combustibles.
Specifications
Dimensions
| Part | Diameter | Style | Finish | Weight |
|---|---|---|---|---|
| URBAK | Universal | Universal Rubber Boot Flashing Kit :Includes: • Rubber boot (23" x 23") • Spacer kit • Shield for ventilation • Mesh screen • Special storm collar and mounting hardware | — | 12.0 lb |
| 5DT‑FC | 5" | Finishing Collar with adapter | — | 1.1 lb |
| 5DT‑SC | 5" | Storm Collar 5" - 6" | — | 0.6 lb |
| 5DT‑RSTC3 | 5" | Trim Collar for Roof Support 0/12 - 3/12 | — | 2.3 lb |
| 5DT‑RSTC12 | 5" | Trim Collar for Roof Support 10/12 - 12/12 | — | 2.2 lb |
| 5DT‑RSTC6 | 5" | Trim Collar for Roof Support 4/12 - 6/12 | — | 2.3 lb |
| 5DT‑RSTC9 | 5" | Trim Collar for Roof Support 7/12 - 9/12 | — | 2.3 lb |
| 5DT‑TC | 5" | Trim Collar for Round Support Box - 5" - 6" (square) | — | 1.9 lb |
| 6DT‑FC | 6" | Finishing Collar/w adapter | — | 1.3 lb |
| 6DT‑RSTC3 | 6" | Trim Collar for Roof Support 0/12 - 3/12 | — | 2.2 lb |
| 6DT‑RSTC12 | 6" | Trim Collar for Roof Support 10/12 - 12/12 | — | 2.2 lb |
| 6DT‑RSTC6 | 6" | Trim Collar for Roof Support 4/12 - 6/12 | — | 2.2 lb |
| 6DT‑RSTC9 | 6" | Trim Collar for Roof Support 7/12 - 9/12 | — | 2.2 lb |
| 7DT‑FC | 7" | Finishing Collar with adapter | — | 1.5 lb |
| 7DT‑SC | 7" | Storm Collar 7" - 8" | — | 0.7 lb |
| 7DT‑RSTC3 | 7" | Trim Collar for Roof Support 0/12 - 3/12 | — | 2.6 lb |
| 7DT‑RSTC12 | 7" | Trim Collar for Roof Support 10/12 - 12/12 | — | 2.5 lb |
| 7DT‑RSTC6 | 7" | Trim Collar for Roof Support 4/12 - 6/12 | — | 2.6 lb |
| 7DT‑RSTC9 | 7" | Trim Collar for Roof Support 7/12 - 9/12 | — | 2.6 lb |
| 8DT‑FC | 8" | Finishing Collar with adapter | — | 1.6 lb |
| 8DT‑RSTC3 | 8" | Trim Collar for Roof Support 0/12 - 3/12 | — | 2.3 lb |
| 8DT‑RSTC12 | 8" | Trim Collar for Roof Support 10/12 - 12/12 | — | 2.2 lb |
| 8DT‑RSTC6 | 8" | Trim Collar for Roof Support 4/12 - 6/12 | — | 2.3 lb |
| 8DT‑RSTC9 | 8" | Trim Collar for Roof Support 7/12 - 9/12 | — | 2.2 lb |
Documents
Details
| System | DuraTech |
|---|---|
| Listing | c-UL-us listed to UL 103 HT |
| Clearance to combustibles | 2" to combustibles |
| Price basis | DuraVent 2026 list price (MSRP), effective July 1, 2026 |
Questions
What size do I need?
The appliance's own instructions set the chimney diameter; match it, and keep the whole chimney one diameter.
What clearance does it need?
2" to combustibles, per DuraVent's listing. Never fill the clearance space with insulation.
Can I mix DuraTech with other brands?
No. DuraVent's instructions require authorized DuraTech parts only, to keep the chimney listed.
Where are the installation rules?
In the documents above: supports, firestops, enclosures and chimney height are set by DuraVent's instructions, and the installer follows them.
Why is there no photo?
DuraVent images are being added; the part numbers and sizes on this page are from DuraVent's 2026 list.
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