night latch cylinder assembly

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NL-OP, Night Latch Cylinder Assembly - Optional Pull, Optional Pull
NLOP means Night latch optional pull (night latch cylinder assembly with pull by others).
Grade 1 locks are tested and certified to be in compliance with the following ANSI/BHMA Standards: Cylindrical, Bored and Preassembled Locks & Latches 800,000 Certified Cycles ANSI/...
Grade 2 locks are tested and certified to be in compliance with the following ANSI/BHMA Standards: Cylindrical, Bored and Preassembled Locks & Latches 400,000 Certified Cycles ANSI...
The 17, 18, & 19 devices use the same dogging assembly part #610480.
The 388 Cylinder Control is required for the NL-OP function on a 33A/35A series exit devices. The 110NL is used on 22 and 98/99 series exit devices not 33/35A series devices.