SCD-FR Series

Product Information

View Performance Data SCD-FR
Three Hour Rating - Lay-In

PRICE SCD-FR square cone diffusers are fire-rated Assemblies listed in the UL Listed (Underwriters Laboratories Fire resistance Directory) and ULC Listed (Underwriters Laboratories of Canada Equipment and Materials Directory). This design meets time versus temperature test criteria and NFPA 90A requirements.

SCD-FR square cone diffusers are the most efficient diffuser for any ceiling application. It delivers supply air in a true 360° radial horizontal air pattern onto the ceiling making it ideal for VAV applications. The special contour design of the diffuser cones prevent smudging and streaking associated with many other types of ceiling diffusers.

  • Available in both imperial and hard metric module sizes.
  • Non-adjustable, butterfly type ceiling radiation damper.
  • Designed for use in an exposed grid suspension ceiling (T-Bar Lay-in) with a three hour or less restrained or unrestrained assembly rating. Units must be installed in accordance with the instructions that accompany each unit.
  • Thermal blanket is non-asbestos.
  • Standard 165 °F [74 °C] fusible link, optional 212 °F [100 °C] fusible link.
  • Cones are one piece die-formed with smooth, aerodynamically designed surfaces and no corner joints.
  • All sizes are standard with 3 concentric cones (3C). Optional 4 cone model available in 24" x 24" and 600 x 600 face size for aesthetic considerations (4C).
  • Inner cone sub-assembly features a special lock arrangement for fast, easy installation and removal without special tools. Provides access to optional volume controller.
  • Optional adjustable volume controller (Allen key adjustable).
  • Optional 20 x 20, 24" x 12, and
    24" x 24" T-Bar Lay-in Panel.


Model SCD-FR
3 Cone

Model SCD-FR
4 Cone (aavailable in
24" x 24" and 600 x 600 face size only)




    Product Selection Checklist

  1. Select Inlet diameter.
  2. Select Face Size based on ceiling module.
  3. Select Diffuser style by model number.
  4. Select Panel option according to installation requirements
  5. Select Number of Cones desired
    (3C is standard).
  6. Select Finish.
Example: 8" / 24" x 24" / SCD-FR / 3C / B12

White Powder Coat
For optional and special finishes see
color matrix.

Available Module Sizes
24" x 24"
600 x 600
20" x 20"
500 x 500
12" x 12"
300 x 300

*Performance Note:
The catalog data referenced can be used as a guide for selection of fire-rated diffusers. Sound and pressure drop values are increased from standard catalog values for some models and sizes due to restriction of the fire damper. For detailed selection assistance please contact your Price representative.

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