WHAT IS LEVER FUNCTION

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The storeroom lock function is described as follows: Latch bolt operated by key from outside or by operating inside lever. Outside lever is always inoperative. The following are storeroom functi...
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: Remove ...
Inside cylinder locks and unlocks the outside trim, such as thumb piece, knob or lever.  Outside cylinder functions as an NL when inside cylinder locks the outside trim.Double cylinder fe...
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...
At one time we offered a 9453 function in several different lever, knob and grip handleset designs. A wide variety of trim offerings were available. The mortise lockcase was a smaller version of th...
ND -series locks manufactured on or after January 30, 2017 use the following spring cages:Outside - N523-218 - For ALL cylinder options except for JD-YA6, JD-YA7 and JD-MEDInside - N523-222 -...
ND-series locks manufactured before January 30, 2017 used the following spring cages:
996L trim is a standard Classroom Function lever set for the 98/99 panic devices.  The 996L-NL trim is a rigid lever for the 98/99 device where the key will retract the latch on the panic device bu...