The Rh3" x 5"Concentric Vent Termination by Rheem is a stainless steel vent kit designed for indoor gas water heaters. This product, model Rheem RTG20275, features a 5-inch width and provides a solution for proper venting of heating systems. With its high-quality material and brand reputation, this vent termination offers a reliable and durable option for chimney and stove pipes.