Noise reducing waterproof and air-tight material.
This high quality flexible acoustic ducting gives the grower more noise reduction. Because it is insulated it also reduces heat. fits all makes of fans and filters. 5 and 10-meter lengths.
NPK Top Tip: Remember to attach the inside aluminium ducting to the fan before pulling the outside aluminium over and attaching with tape.
Sizes:
4"/100mm
5"/125mm
6"/150mm
8"/200mm
10"/250mm
12"/315mm