The DVL 6 x 6 Double Wall Black Pipe Length is a component that is used in a typical venting installation. Designed for installation with minimum clearance to combustibles (6 to walls, 8 from top of horizontal run to ceiling). Available in 6, 7, and 8 diameters. Subtract 3 4 for installed length. Constructed with a stainless steel inner wall.Fuel Type: Wood Length: 6 Material: 26 Gauge Aluminized Steel Pipe Class: Stove Pipe Pipe Inside Diameter: 6 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 2