For sound absorption in ventilation and air-conditioning installations.

In the RS-N model, the damping is effected through the absorption principle, and occurs via ring-shaped chambers lined with mineral wool. The RS-M model contains an additional central silencer, covered toward the air jet abrasion-resistant with a galvanised perforated sheet.

Duct silencers have been tested according to DIN EN 1751:2014 tightness class “C”.

• Possible cross-section of diameter 71 mm to 710 mm, packing thickness 50-100 and 150 mm.
• Cylindrical silencers for round ducts. • Outer casing made of galvanised steel with connection spigot.
• Insulation made of non-flammable mineral wool filling as per DIN 4102 A2.
• Optional: Certified according to ATEX Directive 2014/34/EU