L convert NL

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The 510L can be converted to a nightlatch 510L-NL by changing out a few parts to the trim. See 510L to 510L-NL conversion instructions for required parts that will need to be added/r...
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...
To convert the Von Duprin 98/99 Rim or Vertical (Rod or Cable) Exit Device with functional lever (996L-R/V) to act like a rigid lever (996L-NL-R/V) with key over ride follow these steps: R...
The current 712L/912L (after 2/28/2011) can be field converted by purchasing the NL Spring part #600339 and following the L to NL function change instructions.
To convert the 373L to NL function, it requires NL cylinder plate, 050599 which would have been shipped with the 373L trim.
Follow step 6 of the 18-R instructions to convert trim function to Night Latch(L-NL).
To convert the 88TP to 88NL, device needs a correct back plate conversion kit, part number 050101 and a new 880NL trim.
The function of the 812L trim was determined by the device itself for a Rim or Surface vertical rod device. See the appropriate device instructions(link below) under the  "Locking ...