Product Description
9875NL-F-US28-4 Von Duprin 9875 Series with 990NL-M Night Latch Fire Rated Mortise Lock Exit Device in Aluminum
The 9875NL-F-US28-4 is a Von Duprin 9875 Series Mortise Lock exit device in Aluminum (US28/628), sized for 4' doors. Night Latch — outside lever locks and unlocks by key, inside always free for egress. Ships less cylinder — order a mortise cylinder separately to match your existing keyway.
Fire Rated — UL listed for use on fire-rated openings. Mechanical dogging is deleted per UL code on fire-rated models. Field-reversible handing.
Pro-Tip from Our Locksmiths: The 9875 mortise lock exit device combines exit device push bar with a mortise lock body recessed into the door edge. This gives you the latching security of a mortise lock with code-compliant panic hardware. Popular on storefront doors where you need both security and life safety.
| Specifications | |
|---|---|
| Part Number | 9875NL-F-US28-4 |
| Brand | Von Duprin (Allegion) |
| Series | Von Duprin 9875 |
| Function | Night Latch |
| Grade | ANSI/BHMA A156.3 Grade 1 |
| Mount Type | Mortise Lock (mortise body recessed into door edge) |
| Finish | Aluminum (US28/628) |
| Door Size | 4 Foot |
| Cylinder | Ships less cylinder |
| Fire Rating | Fire Rated — UL Listed |
- Von Duprin 9875 Series touch bar mechanism — Grade 1 architectural-grade panic hardware
- Mortise Lock (mortise body recessed into door edge)
- Aluminum finish
- Fire rated — UL listed for fire-rated openings, no mechanical dogging
Free Expert Support — As an authorized Von Duprin distributor, Lock Depot provides full manufacturer warranty coverage and same day shipping on most orders. Call (877) 365-5625 for personalized help.
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
