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Cost Effective / Low Profile / Easy Installation: OEM & Retrofit

The FLATPAC Silencer is a new attenuator available in a variety of sizes, depths and configurations


bullet Packaged Power/CoGen/EnGen
bullet Noise Enclosures
bullet Circuit Card Chassis
bullet Secured Conference Rooms
bullet Fan/Blower/HVAC Systems
bullet Control Consoles
bullet Electric Cabinets
bullet Hydraulic Power Supplies
bullet Cross Talk Silencers
bullet Compressors
bullet Dust Collectors
bullet Heat Pumps
bullet Fume Extractors
bullet Air Knives/Squeegees
bullet Equipment Rooms
bullet Transfer Ducts
bullet Clean Rooms
bullet Motels/Hospitals/Condominiums
bullet Modular Office Ventilation
bullet Remote Radiators
bullet Cooling Towers

Inexpensively priced for OEM, new construction and retrofit applications, depth of the rugged FLATPAC silencer starts at only four (4") inches and may be easily located in dimensionally restricted spaces such as behind ventilation louvers, over enclosure openings and within shallow ducting.  In weatherized installations, the FLATPAC silencer may be furnished with sealed media, stainless mesh or a reactive design with no media nor fibrous materials at all.  For decorative purposes, the silencer face may be finished with an attractive grille, louver and/or screen.  A wide range of aerodynamic and acoustic criteria may be accommodated within the FLATPAC family of silencer configurations.

FLATPAC silencers may be equipped with an optional air filter to provide an economical, environmental control and silencing system in the same area required by a filter alone.  An integral filter/silencer assembly will accept prefilters, intermediate or final filters for air quality and microcontamination control. Noisy control consoles, circuit card chassis and equipment enclosures can be soundproofed and ventilated utilizing the FLATPAC silencing system.

Alternatively, complete enclosures may be assembled from FLATPAC silencer modules to trap noise internally while providing free air movement around and through the enclosed equipment. Also, the FLATPAC silencer may be used in HVAC and heat pump systems, between transfer grilles, behind diffusers and in equipment rooms to reduce undesirable noise.

The FLATPAC silencer is available in an infinite variety of sizes. Individual modules may be as small as six (6") inches square and grow in both length and width to a maximum dimension of forty-eight (48") per side. Modules may be joined to form larger silencer banks as required.




FLATPACS silence machine enclosures,
openings and forced ventilation.

Lightweight FLATPACS provide noise
attenuation and mobility.

FLATPACS may be designed for heavy duty
applications and specific airflow.

FLATPACS silence cooling towers and remote
radiators while maintaining required airflow.

63 125 250 500 1000 2000 4000 8000
Loss - dB
9 11 13 21 30 36 37 36
63 125 250 500 1000 2000 4000 8000
Loss - dB
8 9 10 19 30 33 29 27
Selected Model: FS020-18L Selected Model: FS040-18L
Loss - IWG
0.05 0.10 0.20 0.30 0.40 0.50 0.75 1.00
Face Vel. -
131 192 272 342 395 441 536 619
Loss - IWG
0.05 0.10 0.20 0.30 0.40 0.50 0.75 1.00
Face Vel. -
318 405 573 690 796 890 1074 1240

Higher Airflow / More Noise Reduction / Less Pressure Loss

If a system requires greater performance in insertion loss, higher air flow or velocity and lower pressure losses, then the ALPHALOC Reactive and/or Absorptive silencers are the answer. The ALPHALOC series of silencers for fans and blowers will minimize cost, design time, energy consumption and space. Both rectangular and circular silencers are fabricated from proven aerodynamic designs and state-of-the-art materials. For sanitary applications or contaminated gas flows, silencers are available in a reactive design (no fibrous packing). Options include: Stainless Steel, Monel or UHMW construction; clean out/inspection ports; integral C.I.P. system; removable internals; etc. Contact your area representative or the factory direct for selection assistance.


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Copyright 2010 Aeroacoustic Engineering Consultants, LLC
Last modified: March 03, 2011