Auxiliary fire latch fire ratings

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Installation should be 6" from bottom of the door. See attached templates as reference.  T-5494 for HM Doors W-5494 for Wood Doors
Auxiliary fire latch is tested only from door to door latching by Von Duprin. Some door manufacturers have tested our devices LBR and use additional fire latches to pass the fire test. Contact the ...
1400 degrees which is approximately 20 minutes after the fire starts.
The AD and CO locks both have a 3 hour fire door rating. Please see URL for more info.  UL Fire Rating List
Dutch doors are available as Fire Rated door assemblies and have similar component requirements as a single leaf fire door. Exceptions are as follows: The Dutch Door assembly must have a lock...