DuraVent 16" Inner Diameter - Type B Round Gas Vent Pipe - Double Wall - 18" Pipe Length

This Aluminum 18 Inch Length Round Rigid Pipe with 16 Inch Inner Diameter from the Round Gas Vent series is a Type B gas component and consists of the duralock system for a tight seal. To calculate installed length, subtract 1 1/2” (for 10”-16” diameter) and 1 1/8” (for 18”-30” diameter) from each connection of vent. A 1” clearance (air space) to combustible materials must be maintained. 18”-30” diameters are built to order and can not be returned.