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CAP119 Motorized Ceiling Fan Filter Units draw air in through a top-mounted prefilter and blow air out the other side through a HEPA or ULPA filter into a cleanroom. They are often installed in a ceiling grid system but can also be mounted on a support frame or suspended from a support structure.


Standard HEPA filter provides 99.99% efficiency on particles 0.3 microns are larger. Optional ULPA filters provide 99.999% percent efficiency on particles as small as 0.12 microns.


Air flow velocity is factory-set in accordance with Federal Standard 209E (90 ± 20 FPM). Blower/motor assemblies are sized to provide proper air flow with a minimum 50% increase in HEPA filter pressure drop. This ensures years of reliable service from your custom fan filter unit without changing the HEPA filter.

Blower/Motor Assembly

CAP119 cleanroom fan filters utilize single-intake, backward curved impellers that are statically and dynamically balanced. Each blower is made from high-performance composite material that is light weight and durable. CAP119 filter units feature speed controls mounted on the side which can be adjusted to compensate for extra pressure drop caused by loading or contamination buildup on the HEPA filter surface.

Custom Fan Filter Unit Options

  • ULPA filter (99.999%)
  • Power cord
  • Stainless steel housing
  • Network Speed Control
  • And more!