• Extensive utility: used in air duct fan systems for ventilation projects, including hydroponic grow rooms and grow tents. • Silicone material with internal steel wire support for flexibility and temperature resistance, keeping the interior air cool. • Easy to place and customize according to the length of use, can be easily cut with a wire cutter. • Size: Diameter: 45mm/1.77"; Length: 1 m/3.28 ft; Temperature range: -30°F ~ 300°F. • Includes: 1 x Silicone air duct hose.