First Technical Services rectangular and circular duct attenuators provide effective, predictable noise reduction at substantial savings over other noise reduction methods because FTS products are laboratory-developed and tested under controlled conditions. Moreover, we manufacture duct silencers to Specific metal tolerances and with controlled acoustic infill flow resistances to achieve consistent results.
Sound attenuators are used to absorb the noise in air conditioning or ventilation ducts.
Steel casing; Mounting flange with treaded insert; Acoustic material in mineral wool 60 kg/m3 with protection against erosion by glass fiber fire resistance A1 and extended metal net.
Operating mineral wool temperature: 400oC (peak 500OC)
Melting transparent polyester film:250oC;
Streamlining as assembly with self-locking bolts;
With or without internal streamlining inserts;
Casing in painted carbon steel, galvanized steel and stainless steel on request.
Possibility of mounting the lifting ring.
The sound attenuators are used to absorb the noise in air conditioning or ventilation ducts.
Bend attenuators can be designed for vertical or horizontal installation to suit the ductwork layout.
