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Line of products

Fan silencers

Fan inlet silencers

Rectangular silencers

Elbow silencers

Inlet box silencers

Circular silencers

Parallel baffle circular silencers

Annular ring circular silencers

Fan outlet silencers

Rectangular silencers

Elbow silencers

Circular silencers

Parallel baffle circular silencers

Annular ring circular silencers

Industrial silencers

PD blower silencers

Absorptive mufflers

Reactive mufflers

Reactive-absorptive mufflers

Compressor silencers

Absorptive mufflers

Reactive mufflers

Reactive-absorptive mufflers

Stack silencers

Circular silencers

Parallel baffle circular silencers

Annular ring circular silencers

Motor silencers

Inlet box silencers

Ventilation silencers

Intake & discharge silencers

Rectangular silencers

Elbow silencers

Circular silencers

Parallel baffle circular silencers

Annular ring circular silencers

Duct silencers

Rectangular silencers

Elbow silencers

Circular silencers

Acoustic louvers

Industrial mufflers

Engine mufflers

Absorptive mufflers

Reactive mufflers

Reactive-absorptive mufflers

Vent silencers

Steam silencers

Reactive-absorptive vent silencers

Natural gas silencers

Reactive-absorptive vent silencers

Flexible connections

EPDM flexible connections

Rectangular EPDM flexible connections

Rectangular EPDM acoustic flexible connections

Circular EPDM flexible connections

Circular EPDM acoustic flexible connections

PTFE flexible connections

Rectangular PTFE flexible connections

Rectangular PTFE acoustic flexible connections

Circular PTFE flexible connections

Circular PTFE acoustic flexible connections

High temperature flexible connections

Rectangular PTFE flexible connections

Rectangular PTFE acoustic flexible connections

Circular PTFE flexible connections

Circular PTFE acoustic flexible connections

Acoustic flexible connections

Rectangular EPDM acoustic flexible connections

Rectangular PTFE acoustic flexible connections

Circular EPDM acoustic flexible connections

Circular PTFE acoustic flexible connections

Architectural environmental noise barrier systems

Noise panels and noise enclosures

Turbine intake systems

Gas turbine silencers

Rectangular silencers

Elbow silencers

Turbine filtration

Other products and accessories

Rectangular weatherhoods and cowls

Circular weatherhoods and cowls

Filter boxes

Other custom designed products

What sets us apart

Resources

Frequently asked questions

The Sounding Board

Turnkey ventilation system

Stop the noise pollution

A sound approach

Case studies

Industrial silencers on plant noise abatement

Fan silencer reduce noise on a dust collector

Mine ventilation system

Nitrogen purge system

Unique fan silencer

Industrial Baffles for International Project

dBNR Video Resources

dBNR Corporate Brochure

Nois-eNvelope™ Website

Nois-eNvelope™ Brochure

Vent Silencer Data Form

Technical data and specifications

OEM customers

Careers

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Servicing clients in the US, Canada, Mexico, and many international locations worldwide.