3 Inch Duct Hose, 3" X 8FT Flexible Nylon Duct, Diesel Heater Hose Insulated Air About this item Nylon [Heat-Resistant Ducting] The newly upgraded 3-inch flexible duct hose withstands warm air temperatures from 0-100C. Its nylon construction and heat-sealed joints provide 25% greater heat resistance than older PVC air Ducting. [Robust Durability] Protects your ventilation system from tears and abrasion damage. HG POWER Flexible Ventilation Hose features reinforced premium nylon fabric and robust spiral steel wire construction for comprehensive abrasion and tear resistance. [3-inch Ducting] HG POWER 3 in 8 ft vent hose is suitable for connecting 3-inch diesel heaters, exhaust vents, fans and similar equipment. The black dryer duct has an inner diameter of 80mm and an outer diameter of 85mm. Its 8-foot length can be freely cut to the required size using wire cutters or a blade. It comes with 2 stainless steel clamps and 1 cardboard box for easy installation and storage. [Flexible and User-friendly] The hose 3 inch can be 360 and freely stretched as well without deformation. [Versatile Applications] HG POWER flexible air duct is suitable for HVAC systems. It functions as an extension tube for diesel heaters, cabin blowers, bathroom vents, exhaust fans, fan exhausts, and other related ventilation and air delivery applications.