Gorilla Acoustic 10m Ducting - 152mm (6") Shipping nitrogen is required in the

nitrogen is required in the greatest amount

covering the small hole with your thumb and giving the bottle a quick shake

Hydroponic growth requires a stable controlled environment

It contains a high-quality ERP2015 compliant Fan lined with 12mm superior soundproof acoustic foam

Suitable for both cuttings and seeds

Gorilla Acoustic 10m Ducting - 152mm (6") Shipping nitrogen is required in theAcoustic Ducting A high quality, flexible aluminium ducting with a perforated inner layer and an acoustically transparent plastic layer to encapsulate the fibreglass. The noise reducing insulation limits break out noise from the duct and acts as a fan silencer. For best results use on both the input and output sides of your extractor fan.