This DuraLiner 8 Inside Diameter 30 Degree Stainless Steel Elbow efficiently helps venting of heating appliances while protecting masonry chimneys from the damaging effects of flue gas. Use as a stove connector to DuraLiner. Features built-in fittings for easy connection to DuraLiner. Elbows are single-wall.ADA Compliant: No Collection: DuraLiner Elbow by Angle: 30 (degree) Fuel Type: Coal, Gas, Oil, Pellet, Wood 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: 2