Anti Friction Fire Dead latch

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 Falcon T Lock Latch Conversion Table       Effective mid-June 2013  Old Part Number   New Part Number       ...
   Falcon T Lock Latches No Longer Offered With The T Lock     Effective mid June 2013  Old Part Number  New Part Number   &nb...
The AD and CO locks both have a 3 hour fire door rating. Please see URL for more info.  UL Fire Rating List
The 4040 regular and hold open arms are different. You would have to get a different arm to convert from regular arm to a hold open function. 4040-3077 for a regular arm. 4040-3077L for a long ...
Try the steps below to improve the hold open adjustment. Remove hold open nut  Apply a couple drops of blue loctite to the threads. Re-assemble, and reset hold open. Let loctite set up overn...