This DuraFlex SS 3 InchDuraFlex Mortar Sleeve is the ultimate in flexible components for strength and flexibility. Use to protect DuraFlex when passing length through a masonry wall.ADA Compliant: No Collection: DuraFlex SS Finish: Stainless Steel Fuel Type: Coal, Gas, Oil, Pellet, Wood Length: 6 Pipe Class: Flexible Liner Pipe Inside Diameter: 3 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Weight: 7