Rounded Corners reactive

Reactive (No-Media) Silencers

Vibro-Acoustics’ No-Media family of silencers are designed to provide absolute protection against any concerns related to the existence of fibrous media in duct systems while providing the attenuation necessary to achieve background noise criteria. These silencers achieve sound attenuation with chambers and baffles formed with micro-perforated metal and internal septums which act as Helmholtz resonators. The acoustically destructive interference caused by these tuned chambers reduces the resultant sound level leaving the silencers. Vibro-Acoustics offers No-Media silencers that can be inspected and cleaned to eliminate dirt, dust and bacteria. We can also construct them with materials that do not react with corrosive or aggressive fumes and gases. 

Typical applications include clean room environments and hospital surgical suites as well as pharmaceutical facilities and laboratory exhaust systems.


Project Solutions: Sunnybrook Health Science Center, Bruce Peninsula Health Care,
Litton Systems Clean Room, Kellogg's Manufacturing

Reactive Rectangular

Designated as “RNM” for Rectangular No-Media, this product line is designed to match straight rectangular ductwork connections and casing geometry.

Reactive Circular

Circular No-Media silencers are labeled “CNM” and are typically used with circular duct systems or inline axial fans.

Reactive Elbow

When project space limitations cannot accommodate straight silencers, Rectangular (“RENM”) or Circular Elbow No-Media (“CENM”) silencers can be used to both attenuate noise and control pressure losses.


Reactive Transitional

To save space and reduce project cost, any silencer can be designed to have different connections and casing geometry to match project requirements.

TNM Silencer Sheet

For more information on this product, please contact us.

Reactive Any Shape & Size

Vibro-Acoustics can provide duct silencers to match project requirements for space and configuration limitations – virtually any size or shape is possible.

EX-RNM/EX-ENM Silencer Sheet
RLP-NM/CLP-NM Silencer Sheet
RSB/RDS Silencer Sheet

For more information on this product, please contact us.