SELKIRK RV 5 In. x 18 In. Round Gas Vent Pipe

Easy to assemble and can be combined to obtain the required installation height. Couplers overlap 1-1/2″ when joined. Assembled length is 1-1/2″ less than listed lengths. Size refers to the inside diameter of the pipe or fitting. The outside diameter of RV is approximately 1/2″ larger. Type B gas vent.