The DirectVent Pro 5 x 8 Galvanized Square Horizontal Termination Cap (Aluminum) is a component that is used in a typical venting installation. The DirectVent Pro square horizontal termination cap is used for standard and high wind through the wall terminations. Check installation instructions for restrictions on horizontal cap terminations, such as minimum distance from windows and doors. This termination cap is made of aluminum.ADA Compliant: No Depth: 19-3 8 Finish: Galvanized Fuel Type: Gas, Liquid Propane Height: 16 Material: Aluminum Pipe Class: Direct Vent Pipe Inside Diameter: 5 x 8 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 4 Width: 16