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a>a>a>a>Exhaust duct hose which is soundproof. Insulation 25mm thick, the mineral wool may be heated up to 140°C. If the ventilation noise is very loud, the soundproofed duct hose may be helpful. The hose is constructed of three layers. It consists of a perforated inner tube on the basis of the Aluconnect tube, surrounded by a sound-insulating mineral wool layer and a final outer layer made of a stable multi-layer film of polyester and aluminum.
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