Bolt not moving

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After installing a classroom deadbolt, there is potential for the thumbturn to project the bolt only, get stuck in one position, or move both directions but not move the bolt.  These are caused fro...
To convert the Von Duprin 9975NL(Night Latch or Storeroom) to 9975L (Classroom) exit function follow these steps (Note: the mortise lock is shipped as Night Latch from the factory): Turn the NL ...
To convert the Von Duprin 9975L to 9975NL exit function follow these steps (Note: the mortise lock is shipped as Night Latch from the factory): Turn the NL screw on 7500 mortise lock counter clo...
The Falcon T lock will be featuring a new latch on June 10th, 2013.  The Falcon T lock remains a certified Grade 1 lock and is compliant with ANSI / BHMA 156.2-2011.  The revised loc...
To convert the Von Duprin 360L/TL from nightlatch to classroom or from classroom to nightlatch invert mortise cylinder cam.
The RU lock is factory handed for a Left hand or Right hand door.   For reverse handing ( Left hand reverse and Right hand reverse doors) see step 9 of the installation instructions for rehanding d...
Recommend to order a new 990NL-R/V or M trim to change from TP/Classroom function to NL/Storeroom function. You will also need to reinstall the NL drive screw back into into the mast...
Followings are the list of the electric latch retraction EL/HDEL (hex dogging), QEL (quiet) kits: 114317-00 QELA Mod. Conv. Kit 040061-00 QELA Mod. Conv. Kit...