Are louvers available in fire rated doors?

Fire Rated doors can be prepared for one listed fire rated louver. Louvers must be located in the bottom half of the door. Doors with louvers can only be used in equipment and mechanical areas of the building. FM (Factory Mutual) does not allow the use of louvers in fire rated doors.

Basic guidelines on louvers for UL & ITS/WH fire rated doors are as follows:

  • Louvers are available in Single or Paired openings
  • 3/4 hour, 1 hour  and 1 1/2 hour listings only
  • Louver must be a listed "Fusible Link Louver"
  • 24" x 24" maximum louver size
  • Glass Lights cannot be used in conjunction with louvers
  • Fire Exit hardware is not available. Single point lock/latch only

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