Product Description
98NL-F-US28-4 Von Duprin 98 Series with 990NL Night Latch Fire Rated Rim Exit Device in Anodized Aluminum
The 98NL-F-US28-4 is a Von Duprin 98 Series rim 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: Hex key dogging is standard on non-fire-rated 98 rim devices. That means you can hold the latch retracted during business hours so the door operates as a push/pull. Fire-rated models delete dogging per UL code — if the customer needs doors to stay open on a fire-rated opening, budget for mag holders tied to the fire alarm.
| Specifications | |
|---|---|
| Part Number | 98NL-F-US28-4 |
| Brand | Von Duprin (Allegion) |
| Series | Von Duprin 98 |
| Function | Night Latch |
| Grade | ANSI/BHMA A156.3 Grade 1 |
| Mount Type | Rim (horizontal latch bolt — strikes into frame on lock side) |
| Finish | Aluminum (US28/628) |
| Door Size | 4 Foot |
| Cylinder | Ships less cylinder |
| Fire Rating | Fire Rated — UL Listed |
- Von Duprin 98 Series touch bar mechanism — Grade 1 architectural-grade panic hardware
- Rim (horizontal latch bolt — strikes into frame on lock side)
- Aluminum finish
- Fire rated — UL listed for fire-rated openings, no mechanical dogging
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
