Speedi-Products BV-RP 412 4-Inch x 12-Inch B-Vent Round Pipe

Round Pipe for Class B gas appliance venting system. It features a twist and turn snap coupling at one end for secure & adjustable fit. The double wall pipe has an inner aluminum liner and has an exterior made of Galvalume steel a combination of aluminum and galvanized steel that provides enhanced durability and lifespan. Use from appliance to above roof penetration extension.