DuraVent Type B Gas Vent 3" to 10" Adjustable Vent Pipe - 5" Diameter - 5GV12A: This unit necessitates a venting pipe with a 5" inner diameter. This3" gas vent pipe may be adjusted from 3" to 10" in length. This pipe is used to vent water heaters, furnaces, gas fireplaces, boilers, gas stoves, and other Category 1 appliances. This product is made of a two-layer construction. The inside liner is made of.012" aluminum, while the outer wall is galvanized steel. Twist lock technology makes secure connections simple and rapid. A 25-year warranty is included.

Efficiently vents Category I natural gas and propane-fueled appliances Resilient dual-layer construction 5" opening Adjusts from 3" to 10" in length .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