Product Information

View Performance Data PDAS/PDAR





Price PDAS/PDAR Series perforated laboratory diffusers are constructed of aluminum. For use in most laboratory applications, its unique design features performance flexibility, ease of cleaning and an airtight backpan for ceiling integrity. Ideal for pharmaceutical labs, cleanrooms and medical facilities.


  • Integral pattern controller on supply is easily removable for cleaning with extruded aluminum mounting clips (specially designed to maintain the airtight seal of the backpan).
  • 4 way patterns with adjustable curved vanes.
  • Stainless steel opposed blade damper is optional. Damper is easily removable for cleaning.
  • Available in 12 in. x 12 in. (305 x 305) and
    24 in. x 24 in. (610 x 610) modules.

  • Removable aluminum perforated face with 3/16 in. (5) diameter holes staggered 60° on 1/4 in. (6) centers c/w stainless steel safety chains.
  • Aluminum backpan with continuously welded joints.
  • Finish is B12 white powder coat.


 Product Selection Checklist

  1. Select Diffuser Type by model number (PDAS supply or PDAR return).
  2. Select Inlet Size (L x W).
  3. Select Diffuser Size based on ceiling module.
  4. Select Air Flow Pattern (1, 2, 3 or 4 way)
Example: PDAS / 12" x 12" / 24" x 24" / 4
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