All large buildings, underground tunnels, offshore oil and gas rigs are installed with air moving equipment, such as ventilation fans, air handling units, cooling towers, and exhaust systems. Unacceptable noise levels are generated by such equipment and transmitted through both the supply and return air ductworks serving the building's conditioned areas and tunnel ventilation shafts.

ALPHA  Acoustics has a wide range of silencers designed to provide significant noise attenuation to achieve the desired acoustical environment for all applications. The silencer may be fabricated with different materials suitable for various environments, as described in more detail below