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Silent-Mod Acoustical Louver™

Silent-Mod Acoustic Louvers are engineered to deliver high acoustic performance (Transmission Loss, dB) while minimizing airflow restrictions (Pressure Drop, in.w.g.) in space-limited applications. These louvers come in a variety of finishes and material options to fit your design needs. For systems or field conditions requiring flexibility, the louvers can be assembled in a modular fashion. We offer a selection of blade geometries designed to meet acoustic, aerodynamic, and security specifications. Applications include process air intakes, fresh air intakes for ventilation systems, mechanical equipment screens, cooling tower inlets, and more.

 

Features:

– Modular design allows flexible assembly and sizing to meet shipping and handling needs
– Standard, sight-proof, and airfoil blade options

Downloads:

Product Data Sheets
  • Product Specs

    Applications

    Ventilation for industrial plants, mechanical rooms, acoustic enclosures, and noise barrier systems. Acoustic replacement option for standard rain louvers. Relief air from factories and workshops.

    Standard Construction

    Casing: 18 ga. galvanized steel
    Internal: Acoustic grade fiberglass fill

    Louver Blade Shapes

    Standard (AL)
    Sight-Proof V (AL-S)
    Airfoil (AL-F)

    Standard Size Ranges

    Depth: 4 to 12 in
    Width: Up to 48 in
    Height: Up to 120 in

    Custom Options

    Heavy Casings: 10 and 14 gauge steel
    Casing Materials: Stainless steel (304 & 316), satin coat aluminum
    Custom depths available
    Wire mesh screen available for protection
    Finish Options: Painted and corrosion protection
    Mounting flange for installation ease
    Custom configurations for space and weight restrictions
    Protective Linings: Fiberglass cloth options
    Mounting options: Hinged or door

    Accessories

    Access doors, 1x1 wire mesh for protection

  • Acoustical Performance
    Louver Type Depth (in.) Octave Band Transmission Loss(db) Pressure drop (in.w.g) at Various Face Velocities
    Louver Type Depth (in.) 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz 250 fpm 300 fpm 400 fpm 500 fpm
    AL 4 4 6 8 11 15 20 16 12 0.09 0.13 0.24 0.37
    6 5 6 9 12 17 22 18 16 0.11 0.16 0.28 0.44
    8 6 7 10 14 20 23 21 18 0.10 0.14 0.24 0.38
    12 7 8 11 16 22 25 23 20 0.09 0.13 0.23 0.36
    AL-S 8 6 7 11 16 23 25 24 19 0.10 0.14 0.24 0.38
    12 7 9 12 18 24 26 25 21 0.11 0.14 0.26 0.39
    18 7 10 13 20 26 27 25 22 0.10 0.15 0.26 0.40
    24 8 11 14 21 28 28 26 22 0.11 0.15 0.27 0.42
    AL-F 8 5 5 6 9 12 13 10 12 0.03 0.04 0.07 0.11
    12 7 7 9 12 15 14 11 12 0.04 0.05 0.09 0.14
    18 7 9 11 14 20 18 12 13 0.03 0.05 0.08 0.13
    24 8 11 12 19 24 22 13 13 0.04 0.05 0.09 0.14

Product Specs