DuraLiner ensures safe and efficient venting of heating appliances, while protecting the masonry chimney from the damaging effects of flue gas. It is the only factory-insulated product with zero zero clearance for high heat wood-burning applications. No need to uncoil flex, insulate a majority of the pipe, or protect the insulation when installing. A smooth inner means less creosote buildup. DuraLiner is a high-temperature, insulated double-wall masonry relining system for use with appliances fueled by gas, pellet, oil, wood or coal.ADA Compliant: No Collection: DuraLiner Depth: 8-5 8 Finish: Stainless Steel Fuel Type: Coal, Gas, Oil, Pellet, Wood Height: 36 Length: 36 Material: Aluminized Steel, Stainless Steel Pipe Class: Rigid Liner Pipe Inside Diameter: 8 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 13 Width: 8-5 8