IAC Acoustics rectangular and cylindrical duct attenuators provide effective, predictable noise reduction at substantial savings over other noise reduction methods because IAC products are laboratory-developed and tested under controlled conditions. Moreover, we manufacture duct silencers to specific metal tolerances and with controlled acoustic infill flow resistances to achieve consistent results.

Should none of our standard range of silencers meet your requirements we will develop one for you. If you have a special requirement, please contact us and our specialist team will be able to provide you with a bespoke solution.

IAC Acoustics Duct Attenuator Range of Products We design and manufacture duct attenuators in response to specific requirements from acoustical consultants, consulting engineers, owners and contractors.

Our duct silencers provide the most economical choice for solving the wide diversity of noise control problems encountered in HVAC engineering.

IAC standard rectangular duct attenuator cross sections range from 150mm x 150mm (6in. x 6in.) to 1200mm x 1200mm (48in. x 48in.). For small mains, branches and duct run outs there are module sizes to fit every need.

When large silencer banks are required, multiple-module assemblies can be arranged to provide almost limitless dimensional flexibility.