4 Inch x 8 FT Insulated Flexible Duct with 2 Clamps, Noise Reducing, for Ventilation Systems roof-vent Product Length: 18 Inch

Product Length: 18 Inch

sleeve height 75mm

which can be cut into as many pieces as you need using a wire cutter and a paper knife

green houses and grow rooms (air Circulation

4 Inch x 8 FT Insulated Flexible Duct with 2 Clamps, Noise Reducing, for Ventilation Systems roof-vent Product Length: 18 InchProduct Information Color: Black Ducting Opening Size: 3 inch 4 inch, 5 inch Strectch Lengh: 4 FT 8 FT Thick layer of PVC&2 layers of Aluminum on this ducting prevents gas leaks. Works with extractor and inline duct fans, carbon filters which are 3" 4" 5" in diameter. Application HONGUAN duct silencer is suitable for HVAC system. It will move and deliver air in kitchens (cooking exhaust), green houses and grow rooms (air Circulation, intake, exhaust