Name: Pu Polyurethane Air Duct Material: Pu Polyurethane Length: 1M Long Specification: Inner Diameter*Wall Thickness (Inner Diameter 60Mm*0.63Mm, Inner Diameter 63Mm*0.63Mm, Inner Diameter 65Mm*0.63Mm, Inner Diameter 70Mm*0.63Mm, Inner Diameter 75Mm*0.63Mm , Inner Diameter 76Mm*0.63Mm, Inner Diameter 80Mm*0.63Mm, Inner Diameter 85Mm*0.63Mm, Inner Diameter 90Mm*0.63Mm, Inner Diameter 100Mm*0.63Mm) Advantages: Heat-Resistant, Wear-Resistant, Durable, Tensile, Easy to Bend, Compression Ratio 3:1, Fully Transparent, New Material Application: Suction or Feeding of Small Particles, Broken Materials, Abrasive and Powder. It is Mainly Used for Ventilation and Collection in Production Environments with Relatively Large Such As Woodworking Workshops, Ceramic Workshops, and Cement Workshops. Can Also Be Used As a Protective Sleeve.