An example of Ventilation silencers - Duct silencers in the form of baffles

Ventilation silencers

IAC Acoustics A/S has a wide range of duct silencers, including low-frequency and high-frequency silencers, but also fibre-free silencers for hospitals or clean rooms and silencers with no pressure loss. The silencers can be assembled in modules, forming a whole dampening wall or facade. Moreover, they can be delivered with flanges and bird netting. All our models are acoustically tested and can be delivered in galvanised or stainless steel plate.

Overview of Ventilation silencers

See below for a quick overview of our groups of Ventilation silencers.

Quiet-Duct® Rectangular Silencers

Quiet-Duct® Rectangular Silencers are suitable for conventional use and include low-frequency silencers constructed for dampening the octave bands 63 Hz, 125 Hz and 250 Hz;

Clean-Flow™ Rectangular Silencers

Clean-Flow™ Rectangular Silencers are ideal for systems which require a higher degree of cleanliness and hygiene, i.e. hospitals or in connection with clean rooms. Linings on the outside of the dampening material protect against particles from the dampening material being released into the airflow. Special internal construction details protect the lining against wear or premature failure, and are required to maintain the nominal aero-acoustic performance

Conic-Flow® Tubular Silencers

Conic-Flow® Tubular Silencers are suitable for noise reduction and include low-frequency silencers, designed to dampen the octave bands 63 Hz, 125 Hz and 250 Hz;

D-Duct™ Acoustic Diffuser Silencers

D-Duct™ Acoustic Diffuser Silencers are adjusted for use in axial ventilation systems. The combination of an internal diffusion cone and an external, square enclosure makes these devices aerodynamic recovery units, as well as silencers.

Rectangular Packless Silencers

Rectangular Packless Silencers are the ultimate solution for ultra clean environments and corrosive/flammable environments. The complete absence of dampening material combined with easy cleaning and emptying makes Packless silencers suitable for engine test cells, chemical plants, refineries and facilities which handle and process hazardous waste

Tubular Packless Silencers

Tubular Packless Silencers are excellent for piping systems of small diameters, i.e. fume cupboards. Packless design means that they are equally useful for the system types listed for Rectangular Packless Silencers

IAC Duct Silencers
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