Efficient and airtight silencers for circular ducts
Silencers Mute for circular ducts are manufactured by a unique method that leads to:
• High sound attenuation values – up to 64 dB for d125 silencers.
• Top airtightness – class D (EN 12234:2005).
Connection diameters: d100, 125, 160, 200, 250, 315. MUTE silencers easily fit on all types of air handling units with round duct connection.

Construction features and materials:
• Casing and perforated inner net - from galvanized steed (DX51D+Z275). Corrosion class – C2 (ISO 12944).
• Inner material - polyester spunbond (type 488/50).
• Attenuation material - mineral wool. Fire rating class A1 (EN 13501) – non-combustible.


Testing standards:
• Attenuation values are tested according to ISO 7235.
• Air leakages are tested according to EN 12234:2005.
Silencers have been tested at the independent laboratory SIVENTA.