acoustic louvers
red acoustical louver in wall
outdoor duct attenuators
installing duct silencers
duct sound attenuator
hvac louvers
hvac sound traps
acoustic louvers
red acoustical louver in wall
outdoor duct attenuators
installing duct silencers
duct sound attenuator
hvac louvers
hvac sound traps

Duct Silencers & Acoustic Louvers

Rectangular and circular silencers, as well as acoustic louvers control the noise generated by air moving equipment. Silencers and louvers are commonly used at the intake and exhaust openings to reduce noise to an acceptable level.

The proper design addresses airflow and available pressure drop in conjunction with the exact sound levels that exist.

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Product Features

OES Rectangular and Cylindrical Attenuators

  • Effective, predictable noise reduction
  • More cost-effective than other noise reduction methods
  • Manufactured with controlled acoustic performance levels
  • Acoustic and aerodynamic performance
  • Designed and manufactured to specific requirements designated by acoustical consultants, consulting engineers, owners and contractors
  • Most economical choice for solving a wide range of noise control problems in HVAC engineering

Quiet-Vent® Silencers

  • Modern, low cost units
  • Easy to install
  • Permit circulation of air in either direction
  • Effectively stops air passage noise through vents (in both directions)

Quiet-Duct® Rectangular Silencers

  • Suitable for conventional applications, including low-frequency silencers having acoustic performance
  • Specifically engineered for the 63 Hz, 125 Hz and 250 Hz octave bands

Clean-Flow® Rectangular Silencers

  • Ideal for systems requiring a higher degree of cleanliness and hygiene, such as hospitals or clean room applications
  • Linings on fill material guard against erosion of particulate matter into the air-stream
  • Internal construction features protect lining against chaffing or premature failure
  • Internal construction features maintain rated aero-acoustic performance

Conic-Flow® Tubular Silencers

  • Available for silencer applications, including low-frequency silencers having acoustic performance
  • Specifically engineered for the 63 Hz, 125 Hz and 250 Hz octave bands

Related Applications

Popular applications for this product include:

industrial noise control for a factory

Manufacturing & Industrial

Noise control problems in industrial & manufacturing sectors are solved with equipment noise isolation via machine noise enclosures, modular in-plant offices or a combination of both.

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Building Systems

Building systems—most notably HVAC systems and the mechanical rooms that contain them—can be a major source of noise without proper noise reduction treatments.

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Product Testing & Development

Acoustically-treated enclosures designed to provide consistent testing environments for precise measurements while providing sound isolation from external environments.

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Security & Law Enforcement

Soundproofing & noise control for security, emergency and law enforcement facilities. Our sound control solutions dramatically reduce noisy distractions caused by open-concept spaces, callers, respondents, equipment, etc.

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Radio, TV & Post Production

Studio soundproofing solutions allow for crisp, clear editing and production in recording studios, control rooms and editing rooms for radio, TV, music & movie environments.

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Restaurants, Hotels & Convention Centers

Noise control products and soundproofing for hotels, restaurants & other hospitality facilities is critical for keeping guests, employees and neighbors comfortable & happy.

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Our Service Offerings

O'Neill Engineered Systems, Inc. offers complete noise control solutions to suit your specific needs. Click on one of our services below to learn more about what we can offer you.

Related Downloads

Click on a PDF below to download technical brochures with detailed specifications, images, graphs and more.

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