DuraVent Model BV Gas Vent Roof Support: a bracket for the pipe at the roof
The DuraVent Model BV Gas Vent Roof Support is a bracket that steadies the pipe where it passes through the roof. It keeps a 1 inch air space between the vent and the roof framing. DuraVent also specifies this support to hold rigid pipe above a DuraConnect II flexible section in an attic. Model BV is DuraVent’s Type B gas vent, the double wall pipe that carries the exhaust from a gas furnace, boiler, or water heater out of the house. It serves natural gas or propane appliances approved for Type B venting that use natural draft, meaning warm exhaust rises on its own.
Choose a 3, 4, 5, or 6 inch diameter to match your Model BV pipe. DuraVent does not publish a weight rating for this support. The vent has an aluminum inner pipe and a galvanized steel outer pipe. Air between them helps keep the inside hot for draft while the outside stays cooler. Need the plate for a ceiling below? See the DuraVent Model BV Gas Vent Firestop Spacer ceiling plate. The DuraVent Model BV Gas Vent Roof Support ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 3BVS | 4BVS | 5BVS | 6BVS
Applications
Duravent’s Type B Gas Vent system. Use with natural gas or liquid propane Category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.
Materials and Construction
Round Type B Gas Vent 3″ – 8″ and Oval 4″ – 6″: Aluminum .012″ inner wall, galvanized .018″ outer wall, in Canada, the lengths have a galvalume .018″ outer wall. The 3″ – 8″ Round gas vent features DuraLock® and DuraTab® . The Oval gas vent features the button lock.
Round Type B Gas Vent 10″ – 18″: Aluminum .014″ inner wall, galvanized .018″ outer wall. DuraLock® feature for 10″ and larger diameters.
Round Type B Gas Vent 20″ – 30″: aluminum .023″ inner wall, galvanized .018″ outer wall. DuraLock® feature for 10″ and larger diameters.
Clearances
Clearances to combustible materials in single and multi-family dwellings:
- 1″ Clearance – USA – 3″ to 30″
- 1″ Clearance – Canada – 3″ to 24″
- 2″ Clearance – Canada – 26″ to 30″
Annular insulating air space
- 3″ – 8″ Round Vent: 1/4″ air space
- 4″ – 6″ Oval Vent: 1/4″ air space
- 10″ – 30″ Round Vent: 1/2″ air space
Diameters
Listings
UL Listed to UL 441 and CAN/ULC-S605 (MH2848 and MH17667).