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Acoustic Louvers

Ventilation air movement through designed ventilation openings requires acoustic louvers to reduce noise that exits the facility, via process and exhaust fans, motors, compressors, and other rotating machinery, that is deemed by outside sensor points, to be excessive. Conventional metal louvers are typically part of an intake/exhaust ventilation systems and sometimes are cosmetic only, so where exiting noise is a critical factor, acoustic louvers need to be considered to improve noise mitigation.  SysTech provides acoustical louvers, designed for industrial duty air control applications, which are engineered for optimal performance and efficiency while ventilating internal building heat loads.  The noise resulting from a ventilation system, including the number of fans, air change rate, and horsepower requirements are factors that need to be considered when considering and selecting acoustic louvers.

Types Of Acoustic Louvers

Acoustic louvers are available with inclined flat or aerodynamic blades. Aerodynamic blades are used in applications where high airflow efficiency is required. All blades have a top covering of aluminum and a bottom covering of perforated aluminum, with the blade interiors packed with sound-absorbing insulation that is both fire and water-resistant.

Acoustice louvers for outside air intake on a compressor room.

Example of aerodynamic acoustic louver blades

Aerodynamic Blades

Example of inclined acoustic louver blades.

Inclined Flat Blades

Standard louver specifications are:

  • Blade depth: 6”, 8” or 12”
  • Blade Type: Inclined flat or aerodynamic
  • Sizes: Minimum size: 12” x 15” and maximum size: 72” x 96”
  • Blade angle: 45⁰
  • Water penetration: at 800-1125 fpm
  • Typical free area: 22-30 %
  • AMCA certified for water penetration and air performance

In applications where covering larger areas is required, louvers are positioned together to gain maximum coverage.

Acoustic Louver Materials of Construction

Acoustical louvers are designed like industrial metal louvers, but with sound-absorbing insulation within the extruded aluminum blades. The fibrous media insulation allows for noise absorbance efficiency to the point where they tend to reduce more noise than free-standing sound reduction enclosures.

Available add-on options:

  • Bird screen
  • Flanges
  • Powder-coat finish

Applications for Acoustic Louvers

Acoustic louvers are practically applied when air movement is necessary, space is limited, and where conventional sound attenuators cannot be installed. They afford the movement of ventilation air into or out of a building while preventing rain entrainment.

Typical applications where acoustic louvers are often used:

  • Foundries
  • Large industrial facilities
  • Compressor buildings
  • Industrial cooling towers
  • Machinery enclosures
  • Boiler rooms
  • Pump rooms
  • Parking garages
  • Generator stations

For noise attenuation applications, you can trust SysTech for the best solution when it comes to your noise mitigation requirements.

Acoustic Louvers
An Integral Part of an Industrial Ventilation System

Where needed for sound control around large buildings that have multiple noise sources and where fresh air ventilation is required, integration of acoustic louvers is a useful tool for general noise control.


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