Von Duprin 35AF-4ft Fire Rated Narrow Stile Rim Exit Device, 4 ft Smooth Case, Less Dogging

Von Duprin 35AF-4ft Fire Rated Narrow Stile Rim Exit Device, 4 ft Smooth Case, Less Dogging

Commercial-Grade Fire Rated Panic Exit Hardware for Narrow Stile Doors

The Von Duprin 35AF-4ft is a fire rated, 4-foot smooth case narrow stile rim exit device engineered for demanding institutional and commercial applications. Designed to fit door stiles as narrow as 1 3/4" (44mm), this ANSI/BHMA A156.3 2014 Grade 1 certified device delivers reliable panic exit performance across single and double door configurations with mullion. Certified to ANSI/UL 10C for fire-rated applications and ANSI/UL 305 for panic exit hardware, the 35A-F is built to meet the highest industry standards in schools, hospitals, and government facilities. The smooth mechanism case and one-piece center case cover distinguish the 35A from the grooved-case 33A, offering a refined architectural profile without compromising heavy-duty performance.

Professional Features & Benefits

• Narrow Stile Compatibility: Fits door stiles as narrow as 1 3/4" (44mm), making it ideal for aluminum-framed and narrow stile door applications where space is limited.
• Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated applications, ensuring code compliance in fire-rated door assemblies.
• ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards, the highest industry certification for panic exit hardware, as well as ANSI/UL 305 and CAN/ULC-S132.
• Smooth Mechanism Case: Features a smooth mechanism case with a newly designed one-piece center case cover for a clean architectural appearance and simplified maintenance.
• Non-Handed Design: The rim device is non-handed (except when the SS signal switch option is used), simplifying specification and reducing inventory requirements.
• Field-Configurable Options: A broad range of field-configurable options and retrofit kits — including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit, LX latchbolt monitoring) — allow the device to adapt to evolving facility needs.
• Upgrade & Retrofit Ready: Compatible with AX accessible device upgrade (certified to 5 lb. force requirements per 2010 ADA Chapters 404.2.7 and 30934, and 2013 California Building Code Chapter 11B-309.4) and CX CHEXIT delayed egress option meeting NFPA and IBC requirements with 15-second delay and nuisance alarm.
• Comprehensive Trim & Function Options: Supports 360 lever/thumbpiece trim (Classroom, Passage, Dummy), 386 pull trim (Storeroom, Dummy), and 388 optional pull trim (Storeroom), with a full range of levers and finishes available.

Technical Specifications

• Product Group: Exit Devices and Trim
• Series: 33 & 35 Series
• Grade: Grade 1
• Fasteners: Includes 1-3/4" and 2-1/4" wood/metal door fasteners, SNB included
• Product Subgroup: Exit Devices - Rim
• Subcategory: Rim Exit Devices
• Latch Throw: 3/4"
• Product Type: Exit Devices - Rim
• Commercial/Residential: Commercial
• Device Centerline from Finished Floor: 39-13/16"
• Stile Type: Narrow Stile
• Wood Door Compatible: No
• MAP Policy: Yes
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4"
• Product Size: 48"
• Product Dimension: 8-3/16" x 1-9/16" x 2-13/32"
• Fire Rating: Yes
• Product Projection: 3-13/16"
• Product Style: Push Pads
• Product Category: Exit Devices and Trim
• Department: Door Hardware

Professional Applications

• Public and Private Educational Facilities (Schools and Universities)
• Healthcare Institutions (Hospitals and Medical Centers)
• Government and Municipal Buildings
• Commercial Office Buildings
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties Requiring Fire-Rated Egress
• Retail Establishments with High-Traffic Exit Requirements

Delayed Egress Compliance

The 35A-F Series is compatible with the CX CHEXIT delayed egress upgrade option, which meets NFPA and IBC requirements for delayed egress applications. When installed, the device keeps doors secure for 15 seconds after a request to exit while a nuisance alarm sounds, providing an added layer of security without compromising life-safety compliance.

Why Choose Von Duprin Quality?

Von Duprin rim exit devices are certified to ANSI/BHMA A156.3 2014 Grade 1 — the highest industry standard for panic exit hardware — and carry ANSI/UL 10C and ANSI/UL 305 listings for fire-rated and panic exit compliance. The 35A-F Series is purpose-built for high-use institutional environments including schools, hospitals, and government facilities, with a broad ecosystem of retrofit kits and upgrade options to keep pace with evolving technology and code requirements. When dependable, code-compliant egress performance is essential, Von Duprin delivers the professional-grade reliability that commercial applications demand.