DuraVent 3" Diameter Type B Gas Vent Pipe - 24" Length: A venting pipe with a 3" inner diameter is required for this unit. This high-quality vent pipe is designed to be used with Category 1 natural gas and propane appliances. The strong dual-layer structure of this vent pipe adds to its sturdiness. The inner liner is .012" aluminum, and the exterior wall is .018" galvanized steel. The twist-lock technology allows for quick and secure couplings. With five pipe lengths to choose from, you can get the right pipe for your project. Only 1" of clearance from combustibles is required for this vent pipe. This product is UL and ULC listed, and it comes with a 25-year warranty.

24 Inch length Efficiently vents Category I natural gas and propane-fueled appliances Resilient dual-layer construction 3" openings .012" aluminum inner liner and .018" galvanized steel outer wall Secure twist-lock connections Requires only 1" clearance to combustibles 25-year warranty UL and ULC Listed