DuraVent 4 in. Dia Hart/Cooley Adapter

Type B Gas Vent is used for venting listed natural gas or liquid propane Category I, draft hood appliances, or appliances that have been specifically tested and listed to use Type B Gas Vent. The appliances listed typically use Type B Gas Vent systems, but not always: Furnaces, Water Heaters, Boilers, Room Heaters, Decorative Gas Appliances, and Unit Heaters. A 1 in. clearance to combustible material must be maintained. To calculate OD add 5/8 in.|Type B gas vent designed to the demands of the common category I appliance installation|Use with natural gas and liquified propane (lp) category I appliances with a draft hood|Engineered to heat up rapidly and remain hot during the appliance operation to allow for minimal condensation|An innovative system for a lock tight connection called DuraLock|1 in. clearance to combustibles in single and multi-family dwellings|Available in 3 in. thru 8 in. Dia|To calculate installed length, subtract 1-1/2 in. from each connection of vent|To calculate OD add 5/8 in.|Limited lifetime warranty|Listed to UL 441 and ULC S693