The Ductings aremanufactured from Non-Porous, Water-proof, Reinforced material made from NylonPolyester Fabric Coated with PVC on both sides. The Tensile and Tear Strengthshall be as per users specification. The Ducting will be provided with150/75/50mm pitch Spiral Spring Steel Wire reinforcement (wire diameter as peruser specification) held in position with the help of welded PVC ExtrudedSection on the outer periphery of the ducting and will be supplied in lengthsof 10 Mtrs. +/- 10% complete with hooks for hanging and suitable Leak ProofCouplings. This can be used both for EXHAUST & BLOWING APPLICATION. Diameter: 200mm to 3500mm.