Product Information

View Performance Data HCF
Price HCF Series diffusers are designed to produce a low velocity, multi-directional air pattern while maintaining the appearance of a conventional "flush face" perforated diffuser. The semi-cylindrical air pattern and low noise level of the HCF allow for selection at higher air volumes than conventional diffusers, making it suitable for medical facilities and kitchens. Its flush ceiling design makes it architecturally flexible, matching the appearance of standard perforated diffusers.

Due to the multi-directional nature of the air pattern produced by the HCF, the throw data is presented in terms of both vertical throw and spread. When applying HCF diffusers they should be selected so that both the spread and vertical throw values fall within the physical constraints of the space to avoid excess velocity at fume hoods, work stations or the occupied zone. If design air volumes result in spread and throw values which exceed requirements, the model FRFD should be considered.


  • Aluminum plenum, extruded aluminum
    frame, aluminum perforated face (51%
    free area) and steel pattern controllers.
  • Plenum, frame and face are finished in
    B12, white powder coat.
  • Face assembly is mounted to the plenum
    with quarter-turn quick-release fasteners
    to facilitate easy access for cleaning.
  • Provided with nylon safety cables
    to prevent the face assembly from
    accidentally falling during removal.
  • Optional neck-mounted volume control
    damper is fabricated of coated steel with
    nickel-plated operators and finished in
    the same B12 white powder coat paint.
  • Suitable for use in either T-bar or surface
    mount applications.

    Product Selection Checklist

  1. Select Diffuser Type by model number.
  2. Select Inlet Diameter.
  3. Select Diffuser Size based on ceiling module.
  4. Select Damper Option, if required.
  5. Select Finish.
Example: HCF / 10" / 24" x 48" / VCR8E / B12
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