This DuraFlex AL DuraFlex AL Kit - 4 x 35 Feet (Includes: DuraFlex AL Length, DuraFlex AL Cap, DuraFlex Top Plate, and DuraFlex Mortar Sleeve) is the ultimate in flexible components for strength and flexibility. Kit includes: DuraFlex AL 35 foot length, DuraFlex AL Cap, DuraFlex Top Plate, and DuraFlex Mortar Sleeve.ADA Compliant: No Collection: DuraFlex AL Finish: Aluminum Fuel Type: Natural Gas, Liquid Propane Includes: Cap, Connector, Pipe Length, Top Plate Length: 420 Pipe Class: Flexible Liner Pipe Inside Diameter: 4 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 50