A noise suppresor for flexible connections in ventilation ducts.
Inner layer: a flexible perforated aluminum tube. Middle layer: mineral wool, 25 mm thick. Outer layer: non-flammable and abrasion-resistant aluminum foil. The noise suppressor is provided with rigid flanges that facilitate its assembly. It is supplied in a constricted form that should be stretched to the full length on assembly in order to achieve a maximum noise dampening effect.
On request, the suppressor may be provided with a DACRON (polyester) noise dampening layer that has been designed for use in premises with higher requirements of unobtrusive and inconspicuous ventilation (schools, kindergartens, hospitals, etc.).
from 0.3 m to 0.6 m (fully stretched) or from 0.6 m to 1.2 m max (fully stretched)
Scope of diameters: 80 - 315 mm