Von Duprin 9875NL-4-US3 Mortise Lock Device, Smooth Mechanism, Night Latch, 4' Door, Bright Brass

  • MPN: 9875NL 4 US3
  • JMAC ID: 200811901
The Von Duprin 9875NL-4-US3 is a mortise lock device designed for a 2'10" to 4' door size. The unit is equipped with a smooth mechanism case and a night latch trim. The device features hex key dogging and a bright brass finish.

The 9875 is a mortise lock device for all types of single or double doors, UL listed for Panic Exit Hardware. Devices are ANSI A156.3 2001 Grade 1. Fits stock hollow metal doors with 86 cutout and door stiles as narrow as 4-3/4" (121mm). The mortise lock device is non-handed except when the following device options are used: -2 (Double Cylinder) or SS (Signal Switch).

The 7500 Mortise lock is equipped with a 3/4" (19mm) anti-friction latch bolt which is field reversible without removing the lock from the door. It has a non-handed auxiliary bolt for deadlocking and a faceplate with an adjustable bevel.


Also known as: 9875NL4US3

Technical Specifications:
  • Series: 9875 Series Mortise Exit Device
  • Finish Description: Bright Brass
  • Grade: Grade 1
  • UL Listing: UL 305
  • Country Of Origin: USA
  • BAA Qualified: Yes
  • Limited Warranty: 3 Years
  • Finish: 605/US3
  • Fire Rated: No
  • Hand: Non-Handed


For more information about the Von Duprin 9875NL 4 US3, please contact us.
  • Hex key dogging
  • Night latch trim - key retracts latch bolt, lever/knob is rigid
  • Mortise lock device for all types of single and double doors
  • Bright brass finish
  • Smooth mechanism case
  • Designed for a 2'10" to 4' door size
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