4GV12 | 4" X 12" Round Rigid Type B Gas Vent Pipe

4GV12 | 4" X 12" Round Rigid Type B Gas Vent Pipe

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Regular price Price: $29.17
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Inventory ID: COP68404

4" X 12" Round Rigid Type B Gas Vent Pipe 4GV12 Use 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. To calculate installed length subtract 1 1⁄2” from each connection of vent. A 1” clearance (air space) to combustible materials must be maintained. To calculate OD add 5⁄8”. For Category 1 gas appliances 1" clearance to combustibles Easy-fit twist-lock design with no fitting hassles 0.012" aluminum inner 0.018" galvanized outer Outer diameter is 5/8" larger than inner diameter

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