Product Information

View Performance Data PDDR/PDDRE

Matching Return for Models PDN and PDF
Flush Face
Steel Construction PDDR
w/ Aluminum Face Screen APDDR
Drop (Extended) Face
Steel Construction PDDRE
w/ Aluminum Face Screen APDDRE

PRICE PDDR / PDDRE Series perforated face return air ceiling diffusers are designed to match supply air models PDN and PDF in appearance and detail, except that air pattern controllers are not required. The PDDR series is offered in two versions — one for ducted return and one for plenum return applications. For ducted return air applications, PDDR features the same backpan as the supply air models, providing a connection to a flexible or rigid round duct, or to a square or rectangular duct. For plenum return (non-ducted) applications, a special frame assembly results in an inlet 2 in. [51] under module size for maximum free area. The drop (extended) face Model PDDRE is available to complement the supply air models PDNE, PDCE and PDFE for tegular tile ceilings.

For Fire-Rated applications see Series PDDR-FR / PDDRE-FR.

  • Choice of cold rolled steel (PDDR / PDDRE) or aluminum face screen (APDDR / APDDRE) construction, both with steel backpan or frame.
  • Hinged, removable perforated faceplate with quick-release spring latches.
  • Choice of five frame styles.
  • Complete range of available accessory dampers, equalizing grids etc.
  • Light shield option (LS) available on plenum return units (PDDR/APPDR).
  • Optional beaded extended neck (2-1/2 in. tall) for easy flex duct connection (BN).
Model PDDR
Maximum Square Neck for plenum return
Model PDDR
Round Duct Connection

    Product Selection Checklist

  1. Select Inlet diameter or Neck Size L x W based on desired performance characteristics.
  2. Select Face Size based on ceiling module.
  3. Select Outlet type by model number (Material, Flush or Drop Face).
  4. Select Border style according to installation requirements.
  5. Select Volume Control accessories, if desired.
  6. Select Finish.

  Example: 8" / 24" x 24" / PDDR / 3 / B12

Available Module Sizes
12" x 12"
300 x 300
24" x 12"
600 x 300
16" x 16"
400 x 400
20" x 20"
500 x 500
24" x 24"
600 x 600
48" x 24"
1200 x 600



White Powder Coat



For optional and special finishes see color matrix.

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