The DirectVent Pro 4 x 6-5 8 Galvanized Cathedral Ceiling Support Box is a component that is used in a typical venting installation. This cathedral ceiling support box is used to pass through a ceiling and support pipe. It may be used on vaulted or flat ceilings. Painted black and the trim and clamp are included.ADA Compliant: No Depth: 10.625 Finish: Galvanized Fuel Type: Gas, Liquid Propane Height: 14 Material: Aluminum, Galvanized Steel Pipe Class: Direct Vent Pipe Inside Diameter: 4 x 6-5 8 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 6 Width: 10-5 8