The Renson Acoudec consists of a polypropylene canvas interior hose, thermally and acoustically insulated with a glass wool layer and finished with an aluminium laminated outside cover. Both ends were finished to realise ready-made connections (sleeve). Applications: - Ventilation systems: recommended to be used if the distance between the extraction point - ventilator unit is ≤ 3 m - Air-conditioning-systems - Insert damper - Noise reducer - Reduction of sounds of machines