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Cleanroom HEPA Fan Filter Units | Variable Speed:

Variable Speed HEPA Fan Filter Units for Clean Room Filter Systems are available in 2' x 2' and 2' x 4' Sizes.

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  • Variable Speed Switch
    1/5 HP Motor
  • 99.99% HEPA, 30% ASHRAE Prefilter
  • 400-750 CFM
    on 2' x 4' Unit
  • 250-400 CFM
    on 2' x 2' Unit
  • UL Listed in USA
    and Canada
  • Ships to USA and Canada
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Cleanroom HEPA Fan Filter Unit Specifications Link

Magnehelic Gage Specifications Link

UL Listed

The M Series HEPA Fan Filter Units sit on top of your cleanroom in 2' x 4' or 2' x 2' ceiling grid where they clean and pressurize air flow into a cleanroom.

The M Series has a variable speed dial for modulating the cubic feet per minute (CFM) flowing into your cleanroom. (400 CFM on lowest speed setting, 750 CFM on highest speed setting).

The HEPA filter that sits inside the unit is 99.99% efficient at stopping 0.3 micron particles and has an ASHRAE pleated type pre-filter. It sits inside a white epoxy diamond patterned grille.

Shown Here on a Clean Fast © M Series the fan sits inside the unit pushing air through that is filtered by the Prefilter that sits on top of the fan.

The energy efficient motor blower is a low watt backward curved impeller, single phase, and permanent split capacitor type offered in 115 Volt (60Hz), 208-230 Volt (50/60 Hz), and 277 Volt (60Hz) versions.

RFQ or Call Us Toll Free at 1-888-423-6638 if you need specialized components: Ceiling Grid, ULPA Grade Filters, UL 900 Class 1 filters, Magnehelic Gages, or duct collar adapters.

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Part numbers: 12261, 12262, 12263, 12100, 12101, 12102, 703902

To purchase a product, call us at 888-4BENNETT (888-423-6638) or 937-324-1100 or email us at