1.Highly flexible,light weight 2.Material: steel wire, PVC 3.Color:white,grey,black 4.DIA:3"-6" (75-150mm) 5.Length:15m Usages:1.Apply to low/medium pressure HVAC system2.For ventilation of industrial dust, wood bits in mill, electronic factory, and bathroom Features:Fire proof PVC film with helix steel wire, anti-friction, Non-flammable; Anti-static Function PropertiesValueMaterialHelix steel ...