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...
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...
For night latch function with pull by others, the 98/99 series mortise exit device should be ordered as NL less trim, e.g., 9875NL-L/TRIM. We will furnish a device only, and the mortise cyl...
We do not offer a true night latch, storeroom or ANSI "03" function with this device. (Entrance by trim when latchbolt is retracted by key. Key removable only when locked.)
This function would da...