Circular sound attenuator reduces noise travelling from air handling unit and supply ventilation ducts. Designed with pod at the center to minimize the pressure loss and generated noise. Air passage and pod diameter varies depending on the required low and high frequency attenuation. Different lengths are provided for the amount of attenuation required.

The attenuator is constructed of specially selected high quality materials. The casing is made of high quality pre-galvanized steel sheet. Aerodynamically designed pod is constructed pre-galvanized perforated steel sheet with medium density fibreglass in-filled material for maximum sound attenuation.

Circular sound attenuator may also be constructed of stainless steel material for marine, pharmaceutical or clean room applications. In-fills may also be made of acoustic foam for clean room purposes.