SMX-FR Series

Product Information

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

PRICE SMX-FR Series of louvered high induction directional 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.

The SMX-FR Series of louvered high induction directional diffusers are specifically designed to solve difficult high cooling load problems in places such as perimeter zone office spaces, auditoriums, convention centers, meeting rooms, restaurants, health care facilities, etc.
Internally mounted discharge vanes are engineered to create a high rate of induction that will rapidly mix warm room air with the cool, conditioned supply air. This rapid mixing (induction) quickly equalizes the temperature differential between the two air masses, thus minimizing the chances of uncomfortable drafts when dealing with large air volumes.

  • 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.
  • One, 2, 3 and 4 way blows available in a variety of sizes.
  • Optional adjustable volume controller (Allen key adjustable).
  • Optional rounded core corners elimi­nate sharp corners on diffuser face.
  • Optional T-bar Lay-in Panel 24" x 24" only.
  • Steel construction
  • Steel mixing vanes fixed to the back of louvers.

Inlet View Without Required Damper

    Product Selection Checklist

  1. Select Duct Size.
  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 Core Style based on application.
  6. Select inlet diameter for square to round adaptor.
  7. Select rounded core corners (RCC).
  8. Select Finish.

Example: 6" x 6" / SMX-FR / 4A / B12

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

*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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