homend air duct, black flexible ducting hvac ventilation air hose for grow tents, dryer rooms,kitchen (5" x 16 ft, black) homend <b>features:</b> <br> <br>thick layer of black pvc ducting prevents light leaks. works with exhaust and intake fans, carbon filters and hooded lights which are 5" in diameter. <br>under the black pvc layer our ducting is built with 2 layers of aluminum foil with a layer of pet and steel wire helix to preserve the shape,keep your ventilation system free of rips and pin holes. <br>designed for reducing noise from fans and carbon filter systems, can decrease the noise by up to 50%. <br>suitable for heating ventilation & air conditioning system. it will move and deliver air in kitchens (cooking exhaust), green houses and grow rooms (air circulation, intake, exhaust and light fixture cooling), bathrooms (smell and moisture exhaust), dryer rooms, grow tents etc. <br> <br> <b>specification:</b> <br> <br>inner:double aluminum foil,double insulation <br>frame:bold steel wire spiral,integrated ventilation <br>outer sleeve:black pvc film,waterproof and lightproof <br>temperature range:-30degree-150degree <br>color:black <br>size: 5 inch x 16ft <br> <br><b>package included:</b> <br> <br>1 x 5 inch x 16ft air ducting <br> <br>