DuraVent 5GVX6, 5 x 6″ Increaser – Type B Gas Vent Round Pipe
Dura-Vents UL Listed Type B Gas Vent. It has a twist-lock design that is fast and easy to install or disassemble all with no fitting hassles. Dura-Vent Type B Gas Vent can be used to vent Category I gas appliances or whenever R-Vent is specified on the appliance label.