Sound Attenuators – Rectangular – ARL
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- Casing: High quality galvanized steel sheet of 0.9mm thickness (standard); up to 1.2mm for bigger sizes.
- Splitters/Baffles: “Bull-Nose” construction using high quality perforated galvanized steel sheet of 0.7mm thickness.200mm splitter width is standard.
- Acoustic Media: Inorganic ,fire resistant , vermin and moisture proof sound absorbent rock wool of 64kg/m³ or 50kg/m³density.
- Liner: Single faced to prevent the media from entering into the air stream.
- Flange: Duct mate flange of 35 mm width.
- Aerodynamically designed to ensure maximum insertion loss and minimal
pressure drop. Air-gap and length of silencer are selected to meet the required NC
level. - Sturdy construction and high noise absorbing capacity to obtain required insertion loss without compromising performance . Manufactured to ensure long and maintenance free service.
- Splitters are radiused at both ends giving a bell mouth entry-exit to minimize self generated noise and pressure loss.
- Full width splitters in the middle and half width side splitters .
- Casing construction with lock formed seams meet SMACNA standards thus providing excellent strength and rigidity .Thoroughly sealed to prevent air leakage.
- Duct mate flange connection (standard) on both ends in compliance with DW144 standards.
- Acoustic infill media is of superior quality non combustible & have fungi resistant characteristics meeting the requirements of EN ISO 1182 and ASTM C665 respectively. It has excellent noise reduction coefficient characteristics with an additional qualification of being biologically inert.
- Tested and certified by Intertek USA (NVLAP accredited laboratories) in accordance with ASTM standard E477-06a ,entitled “standard method of testing duct line material and prefabricated silencers for acoustical and airflow performance”.
General Features
Brand Name
Air Master
Model Part Number
ARL
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