The Von Duprin 9875L-NL-02-F-4-US28-RHR is a mortise lock fire exit device designed for a 2'10" to 4' door size. The unit is equipped with a smooth mechanism case, a night latch trim and a 02 lever with right hand reverse orientation. The device features a satin aluminum finish.

The 9875-F is a fire exit mortise lock device for all types of single doors up to 4 x 10 (1219mm x 3048mm) or 8 x 10 (2438mm x 3048mm) double doors installations, UL listed for Fire Exit Hardware. Devices are ANSI A156.3 2001 Grade 1. Fits 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) devices.

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: 9875LNL02F4US28RHR

Technical Specifications:
  • BAA Qualified: Yes
  • Finish: 628/US28
  • Fire Rated: Yes
  • Grade: Grade 1
  • UL Listing: UL 10C
  • Hand: Right Hand Reverse
  • Country Of Origin: USA
  • Finish Description: Satin Aluminum Clear Anodized
  • Limited Warranty: 3 Years
  • Series: 9875 Series Mortise Exit Device


For more information about the Von Duprin 9875L-NL-02-F 4 US28 RHR, please contact us.
  • Fire exit mortise lock device for all types of single doors up to 4' x 10' or 8' x 10' double doors installations
  • Satin aluminum finish
  • Smooth mechanism case
  • No mechanical dogging
  • Designed for a 2'10" to 4' door size
  • 02 lever with right hand reverse orientation
  • Night latch trim - key retracts latch bolt, lever/knob is rigid
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