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Acoustic Products
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Utilities

Silencer Selection Program



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Rectangular and Round Silencers to Reduce Noise


We also offer a wide-range of acoustic silencers engineered and independently tested to fit your application. Our silencers are designed to reduce noise primarily in heating, ventilating, and air conditioning systems.

Silencer models are specifically designed to reduce noise in specific octave bands or across a wide range of noise levels. They are available in either a rectangular or round configuration, including straight flow models. They come in a wide range of performances and materials, and are available for either exterior or interior applications.

Applications include heating, ventilating, and air conditioning; custom air handling units, generator enclosures, and exhaust stacks, manufacturing equipment, and almost any other situation where noise pollution is a concern.
Materials
Aluminum

Designations on aluminum product will always use decimal thickness designations. Occasionally, specifications may show gauge designations for aluminum that follow the Brown & Sharp (B & S) gauge numbering system.

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Comparative Test Data (245 kB) pdf
Description: Comparison of Dynamic Insertion Loss data between SEMCO and IAC.

Low Frequency Silencers (234 kB) pdf
Description: Our Low Frequency Silencers are specifically designed to solve noise problems in the lower frequency range.

Media-Free Silencers (392 kB) pdf
Description: Our Media-Free Silencers are designed to provide excellent broadband attenuation without the use of fiberfill media, eliminating the concern of fiber erosion or microbial growth in the air stream.

Silencers - Product Sheet (73 kB) pdf
Description: One page overview of the benefits of using silencers from SEMCO Duct & Acoustical Products. Also highlights features, materials available, sizes, options and accessories.

Special Application Silencers (352 kB) pdf
Description: Our Special Application Silencers are designed to provide excellent attenuation for applications when the use of standard silencers is not possible due to spatial limitations.

Standard Silencers (265 kB) pdf
Description: Our Standard Silencers provide good attenuation across all bands.
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