DuraVent's innovative system for a lock-tight connection for Type B as vent called DuraLock. See the alignment indicators meet; feel the ends grasp together; hear the snap as the connection firmly locks into place. DuraVent Type B Gas Vent is designed to meet the rugged demands of the job site. The inner wall is recessed to eliminate damage in handling. Type B Gas Vent has been engineered to heat up rapidly. It remains hot during the operation of the appliance with minimal condensation in the appliance and vent system. Pipe lengths are available in multiple lengths, 6 to 60 inches, with a full complement of adjustable and rigid fittings.

DuraVent® Gas Vent Pipe, 10 in Nominal, 36 in L, 11 in OD, Aluminum Inner and Galvanized Outer

• To calculate installed length, subtract 1-1/2 in (for 10 - 16 in Dia ) and 1-1/8 in (for 18 - 30 in Dia) from each connection of vent
• A 1 in clearance (air space) to combustible materials must be maintained
• 0.12 in inner wall size
• 0.018 in outer wall size

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/DuraVent_10GV12A_Catalog.pdf