Circular Sound Attenuators

   Circular Sound Attenuators

Standard Model: CSA – 50

COSMOS Circular Sound Attenuators were developed to various requirements from the consulting engineers, owners & contractors. They provide the most economical choice for solving the wide range of noise control issues encountered in the HVAC field.

Product Description

The CSA-50 is an industrially fabricated product designed for excellent sound attenuation and ease of installation.

The standard CSA 50 is made of galvanized sheet steel with connection spigots.

The sound attenuating material consists of 50 mm thick long rockwool that offers excellent sound attenuation, especially in the mid-frequencies.

The sound-attenuating material is also covered with perforated sheet steel.

Standard Construction

All attenuator (casings & Splitters) are constructed of galvanized sheet metal gauge 20 minimum. Casing are formed with duct sealant. Other Casing materials are available upon request. The splitters contains acoustic infill has a glass tissue facing concealed behind steel/ aluminium diamond mesh sheet, the splitters have conical end at the air flow direction to minimize air pressure loss and regenerated noise.


●  Minimum pressure drop with  Maximum insertion loss.
●  Large radius inlets & tapered tails to minimize system effects.
●  Available in any cross-sectional size eliminating the need for transitions.
●  Fabricated in components to make the overall silencer bank size for easy handling and installation.
●  Comes standard with flanges.
●  Used in applications ranging from low-velocity duct systems to high velocity duct systems.