Product Description
3548A-T-F-US3-3 Von Duprin 3548A Series with 360T Thumbturn Fire-Rated Exit Device for Hollow Metal Doors in Bright Brass
The Von Duprin 3548A-T-F-US3-3 is a fire-rated touch bar exit device for hollow metal doors from the 35A Series family. Thumbturn — inside thumbturn controls the latch. Common on 33A/35A series. Ships less cylinder — order a mortise cylinder separately to match your existing keyway.
The 35A Series touch bar provides smooth, quiet operation with a clean look. The touch bar is non-handed and field-reversible — one SKU covers both LHR and RHR door swings. Available in 3-foot width. UL listed for fire exit hardware — no mechanical dogging on fire-rated models. ANSI/BHMA A156.3 Grade 1 certified.
Pro-Tip from Our Locksmiths: The 3348A/3548A fire-rated models are designed specifically for hollow metal doors. These are the go-to when the door schedule calls for a fire-rated exit on a steel door frame. No mechanical dogging — fire doors must remain latched at all times.
| Specifications | |
|---|---|
| Part Number | 3548A-T-F-US3-3 |
| Function | T - Thumbturn |
| Grade | ANSI/BHMA A156.3 Grade 1 |
| Mount Type | Rim (horizontal latch bolt — strikes into frame on lock side) |
| Door Width | 3-Foot (36") |
| Door Material | Aluminum, Glass, Hollow Metal, Wood |
| Outside Trim | Included |
| Warranty | 10-Year Mechanical |
- 35A Series touch bar design — smooth, quiet operation
- UL listed for fire exit hardware — no mechanical dogging per code
- Non-handed, field-reversible — one device fits both LHR and RHR
- Bright Brass (US3/605) finish
- 10-year mechanical warranty — longest in the Von Duprin line
Works With: For narrow stile doors, see the 33A Series. For the top-of-line pushpad, see the 98/99 Series. Same trim accessories work across the 33A/35A family.
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.
