This DuraFlex AL 4 x 3 DuraFlex AL Coupling is the ultimate in flexible components for strength and flexibility. The DuraFlex AL flex coupling is used to join flex liner sections together.ADA Compliant: No Collection: DuraFlex AL Finish: Aluminum Fuel Type: Natural Gas, Liquid Propane Length: 3 Pipe Class: Flexible Liner Pipe Inside Diameter: 4 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 7
