Selkirk RV 6" Gas Vent Adjustable Roof Flashing is an essential component designed to provide a secure and weatherproof seal where gas vent pipes pass through the roof. This adjustable flashing is i for roofs with pitches ranging from flat to 6/12, ensuring reliable protection against leaks while supporting the safe and efficient operation of gas appliances. It features a 4" A dimension and a minimum 3-1/2" flange dimension, tailored to fit Type B gas vent systems. The size refers to the inside diameter of the pipe or fitting, with the outside diameter of RV pipes typically being slightly larger. This roof flashing is for both residential and commercial applications, helping maintain the integrity of your gas venting system with durable and precise construction. Model Number: 106825