The DirectVent Pro 4 x 6-5 8 Inner Diameter Galvanized 18 Inner Diameter Pipe Length is a component that is used in a typical venting installation. The DuraVent 18 direct vent pipe is designed for appliances tested and listed for direct vent. Features a fully unitized twist-lock construction in both 4x6-5 8 and 5x8 vent sizes. Use of sealant is optional, unless specified by the appliance manufacturer. To calculate install length, subtract 1 1 2 for each joint. No beads or hems. Black pipe lengths feature exterior laser-welded seams.Finish: Galvanized Fuel Type: Gas, Liquid Propane Height: 18 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: 17
