OOPPEN 4 inch&2.5m Low Noise Duct Silencer Insulated Aluminum Air Duct Flexible Ventilation Ducting Hose Noise Reducer for Inline Extractor Fan (ø100mm)

Description

Size Name:ø100 /2.5m-Black OOPPEN Flexible Ventilation Noise Reducer Ducting Hose Under the gray 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. With centrifugally glass-wool inside,have good sound-absorbing performance, which can decrease the noise by up to 50%. Specification: · Inner duct: Perforated Aluminum foil · Middle layer: Glass Wool （20kg/m³ density) · Outer sleeve: 1 Aluminum + 1 Polyester lamination · Temperature range:-30℃ to 150℃ · Color: black · Air velocity:30m/s · Operating pressure:2500Pa