what is nightlatch

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To convert the Von Duprin 360L/TL from nightlatch to classroom or from classroom to nightlatch invert mortise cylinder cam.
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...
Classroom, Nightlatch, Storeroom
NL, Night Latch (key retracts latchbolt,), Key Retracts Latchbolt (Nightlatch)