Von Duprin 3357AF-3ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

Von Duprin 3357AF-3ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

Commercial-Grade Fire Rated Surface Vertical Rod Exit Device for Narrow Stile Doors

The Von Duprin 3527A-F is a fire rated surface-mounted vertical rod exit device engineered for demanding institutional environments including schools, hospitals, and government buildings. Featuring a smooth mechanism case and narrow stile compatibility down to 1-3/4" (44mm), this 36" device is ANSI/BHMA A156.3 2014 Grade 1 certified and UL listed for panic exit hardware under ANSI/UL 10C. The 3527A-F is non-handed (except when the SS signal switch option is used), making it highly versatile for single and double door applications. The newly designed one-piece center case cover contributes to a clean architectural profile suited for high-traffic commercial installations.

Professional Features & Benefits

• Narrow Stile Compatibility: Fits door stiles as narrow as 1-3/4" (44mm), making it ideal for aluminum and narrow-profile door frames in commercial applications.
• Product Size & Dimensions: Designed for 36" doors with a mechanism case measuring 8-3/16" x 1-9/16" x 2-13/32" and a product projection of 3-13/16" for a low-profile installation.
• Door Thickness Compatibility: Accommodates door thickness of 1-3/4" with included 1-3/4" and 2-1/4" wood/metal door fasteners (SNB included) for flexible installation.
• Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 fire-rated standards, ensuring compliance in fire-rated door assemblies where life safety is paramount.
• Grade 1 Certified Performance: ANSI/BHMA A156.3 2014 Grade 1 certified and listed to ANSI/UL 305 and CAN/ULC-S132, meeting the highest industry standards for panic exit hardware durability and reliability.
• Smooth Mechanism Case Design: The 3527A features a smooth mechanism case (versus the grooved case of the 3327A), providing a refined architectural appearance appropriate for upscale institutional and commercial settings.
• Non-Handed Configuration: The surface vertical rod device is non-handed except when the SS (signal switch) option is used, simplifying specification and reducing inventory requirements.
• Field-Configurable Options & Retrofit Kits: A variety of field-configurable options are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request to exit, LX latchbolt monitoring) for integration with access control systems.
• ADA & Delayed Egress Upgrade Paths: Upgradeable to AX (ADA-compliant, certified to 5 lb. force requirements per 2010 ADA Chapters 404.2.7 and 30934 and 2013 California Building Code Chapter 11B-309.4) or CX CHEXIT delayed egress (15-second delay per NFPA and IBC requirements).
• Device Centerline from Finished Floor: Positioned at 39-13/16" from finished floor for ergonomic and code-compliant operation.
• Latch Throw: 3/4" latch throw provides secure latching engagement for vertical rod top and bottom bolt applications.

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 - Vertical Rod
• Subcategory: Surface Vertical Rod Exit Devices
• Latch Throw: 3/4"
• Product Type: Exit Devices - Surface Vertical Rod
• Commercial/Residential: Commercial
• Device Centerline from Finished Floor: 39-13/16"
• Stile Type: Narrow Stile
• MAP Policy: Yes
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4"
• Product Size: 36"
• 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 and Hospitals
• Government and Municipal Buildings
• Commercial Office Buildings
• Industrial and Warehouse Facilities
• Multi-Tenant Residential and Mixed-Use Properties
• Retail Establishments Requiring Fire-Rated Egress Compliance

Why Choose Von Duprin Quality?

Von Duprin surface vertical rod exit devices are engineered to the highest industry standards, with the 3527A-F Series achieving ANSI/BHMA A156.3 2014 Grade 1 certification and full compliance with ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for fire-rated applications. The narrow stile design accommodates stiles as narrow as 1-3/4" (44mm), and the smooth mechanism case with one-piece center case cover reflects the architectural precision Von Duprin brings to institutional-grade hardware. Trusted in schools, hospitals, and government facilities, Von Duprin exit devices deliver dependable life-safety performance in the most demanding commercial environments.