Specification: Color: Black Length: 6 meters Inter Diameter: 100mm/4inch Material: Aluminum + PVC film Package Included: 1 x Hose 2 x Hose Clamps Features: Light Resist: Thick layer of Black PVC on this ducting prevents light leaks. Works with exhaust and intake fans, carbon filters and hooded lights which are 4"in diameter. Low Noise Silencer: designed for reducing noise from fans and carbon filter systems, can decrease the noise by up to 50%. Variety of Applications: HVAC, Bathroom, Greenhouse, Grow room and Tent and so on.