our connection flexible duct is easily fitted extensions can extend the duct. our connection flexible duct is easily fitted extensions can extend the duct, simply slip the extension over the ring on the end of the duct and secure tie the cord. Orange PVC impregnated polyester ducting with a black external wearstrip reinforced with a spring steel wire helix, light weight duct for easy transport in a fraction of its fully extended length, wearstrip offers external abrasion resistance, manufactured with materials that meet NFPA 701 standards. SPECIFICATION:MATERIAL:high quality PVC tarpaulinAir pressure: 1200-1500 pound/ square incheThinkness: 0.4MMColor: orange, yellow, black, red PVC stripstandard length: 5, 10 meterstemp: -15-80degreerange of diameter: 200-1500mm

flexible duct