This DuraLiner Stainless Steel Extend-a-Cap Kit (Oval 10 x 22 Inch) with 8 Inner Diameter efficiently helps venting of heating appliances while protecting masonry chimneys from the damaging effects of flue gas. Use to terminate DuraLiner at the top of the masonry chimney.Kit includes: Base Plate, Support Clamp, Storm Collar, and Cap Pipe not includedADA Compliant: No Collection: DuraLiner Fuel Type: Coal, Gas, Oil, Pellet, Wood Includes: Base Plate, Cap, Storm Collar, Support Clamp Length: 22 Material: Stainless Steel Pipe Class: Rigid Liner Pipe Inside Diameter: 8 Pipe Shape: Oval Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 7