DuraLiner is a high-temperature, insulated double-wall masonry relining system for use with appliances fueled by gas, pellet, oil, wood, or coal. It safely protects masonry chimneys from the damaging effects of flue product condensation. DuraLiner ensures safe and efficient venting of heating appliances, while protecting the masonry chimney from the damaging effects of the flue gas. It is the only factory-insulated product with zero zero clearance for high heat wood-burning appliances. No need to uncoil flex, insulate a majority of the pipe, or protect the insulation when installing. A smooth inner means less creosote buildup.ADA Compliant: No Collection: DuraLiner Depth: 8-5 8 Fuel Type: Coal, Gas, Oil, Pellet, Wood Height: 60 Length: 60 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: 22 Width: 8-5 8