Product Description
QEL9975NL-313-4 Von Duprin 9975 Series with 990NL Night Latch Trim Mortise Lock Exit Device with Quite Electric Latch in Duranodic Dark Bronze
The QEL9975NL-313-4 is a Von Duprin 9975 Series Mortise Lock exit device in Dark Bronze (313/313), 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.
Quiet Electric Latch Retraction — QEL motor-driven latch retraction provides quiet, ADA-compliant remote unlocking. 24VDC power required.
ANSI/BHMA A156.3 Grade 1 certified. Hex key dogging standard. Field reversible handing.
Pro-Tip from Our Locksmiths: Mortise lock exit devices (9975) require a mortise pocket prepped into the door edge. On retrofit jobs, verify the existing mortise prep is compatible with Von Duprin's 9975 body dimensions. A Schlage L-series prep is close but not identical — don't assume cross-compatibility.
| Specifications | |
|---|---|
| Part Number | QEL9975NL-313-4 |
| Brand | Von Duprin (Allegion) |
| Series | Von Duprin 9975 |
| Function | Night Latch |
| Grade | ANSI/BHMA A156.3 Grade 1 |
| Mount Type | Mortise Lock (mortise body recessed into door edge) |
| Finish | Dark Bronze (313/313) |
| Door Size | 4 Foot |
| Cylinder | Ships less cylinder |
| Fire Rating | Non Fire Rated |
| Electronics | Quiet Electric Latch Retraction |
- Von Duprin 9975 Series touch bar mechanism — Grade 1 architectural-grade panic hardware
- Mortise Lock (mortise body recessed into door edge)
- Dark Bronze finish
- Quiet Electric Latch Retraction — QEL motor-driven latch retraction provides quiet, ADA-compliant remote unlocking
- Hex key dogging standard — hold latch retracted during business hours
Authorized Von Duprin Dealer — Lock Depot ships all Von Duprin products brand new in factory-sealed packaging with the complete manufacturer warranty. Same day shipping available on most orders. Questions? Contact us for free expert support.
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
