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“ WHAT IS NIGHT LATCHE ”

RELATED FAQS

Question
Answer
Why would the 996L trim not lock or unlock when installed with 98 or 99EO?
The 98/99 rim and vertical rod exit devices are shipped with NL drive screw to function as a Night Latch. To convert the device to Class Room, remove the NL Drive Screw on 98/99 center case ass...
How can the Von Duprin 98/9975-L with 996L classroom trim function be converted as a night latch function in field?
The following steps are required to convert the Von Duprin 98/9975L from classroom to night latch function: Order new 996L-NL-M trim and reset NL drive screw in mortise lockbody as se...
How do you change the Von Duprin 990TP trim to NL function?
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...
Can the Von Duprin 230L trim be converted to a Night Latch function?
We do not offer the 230L with night latch function. There is no conversion available.
How do I convert the Von Duprin 360L control from nightlatch to classroom function?
To convert the Von Duprin 360L/TL from nightlatch to classroom or from classroom to nightlatch invert mortise cylinder cam.
Can an 18-R-L be converted to L-NL function in the field?
Follow step 6 of the 18-R instructions to convert trim function to Night Latch(L-NL).
How do you convert the Von Duprin 370 series controls to NL or night latch function?
You must have the Von Duprin NL Cylinder plate part number 967484-89 to convert the 370 series controls from classroom function to night latch function. If new installation, use the NL cylinde...
Can the Von Duprin WS98/9927 exit device be operated as Night Latch function?
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...