This DuraFlex SS 6 InchDuraFlex Vertical Cap is the ultimate in flexible components for strength and flexibility. Use to terminate a relining system at the top of the masonry chimney. Supports flex with a fast connect band. Optional Spark Arrestor available. Not for use with Ventinox flex.ADA Compliant: No Collection: DuraFlex SS Finish: Stainless Steel Fuel Type: Coal, Gas, Oil, Pellet, Wood Pipe Class: Flexible Liner Pipe Inside Diameter: 6 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Single Wall Weight: 20