Von Duprin 3527AF-4ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, Less Dogging, 4 ft

Von Duprin 3527AF-4ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, Less Dogging, 4 ft

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

The Von Duprin 3527AF-4ft is a fire rated, surface-mounted vertical rod exit device engineered for demanding institutional and commercial applications. Featuring a smooth mechanism case and narrow stile compatibility down to 1-3/4" (44mm), this 4 ft (48") device is ANSI/BHMA A156.3 2014 Grade 1 certified and UL listed under ANSI/UL 10C for fire-rated panic exit hardware. Designed for single and double doors, the 3527A-F is non-handed (except when the SS signal switch option is used), offering flexible installation across a wide range of commercial door configurations. The device ships with 1-3/4" and 2-1/4" wood/metal door fasteners and SNB included.

Professional Features & Benefits

• Narrow Stile Compatibility: Fits door stiles as narrow as 1-3/4" (44mm), making it ideal for aluminum storefront and narrow stile door applications in commercial and institutional settings.
• Fire Rated Construction: ANSI/UL 10C and CAN/ULC-S104 fire-rated certification ensures compliance with fire egress requirements for rated door assemblies.
• ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards — the highest industry certification — for heavy-duty performance in high-traffic institutional environments.
• Smooth Mechanism Case: The 3527A features a smooth mechanism case (versus the grooved case of the 3327A), providing a clean architectural aesthetic suited for modern commercial interiors.
• One-Piece Center Case Cover: Newly designed one-piece center case cover simplifies maintenance and contributes to a streamlined appearance.
• Non-Handed Design: Surface vertical rod device is non-handed (except when SS signal switch option is used), reducing inventory requirements and simplifying specification.
• Field-Configurable Options: A broad range of field-configurable options and retrofit kits — including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and RX/LX electronic switches — allow the device to adapt to evolving facility needs.
• Included Fasteners: Ships complete with 1-3/4" and 2-1/4" wood/metal door fasteners and SNB for straightforward installation on both wood and hollow metal doors.
• Multiple Certifications: Certified to ANSI/BHMA A156.3 2014 Grade 1, ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for comprehensive code compliance.

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: 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

• Schools and Educational Facilities
• Hospitals and Healthcare Institutions
• Government and Municipal Buildings
• Commercial Office Buildings
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential and Mixed-Use Properties

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 fire-rated compliance under ANSI/UL 10C and CAN/ULC-S104. The 33A/35A Series has been purpose-built for high-use and high-abuse institutional environments including schools, hospitals, and government facilities, with a breadth of field-configurable options and retrofit kits that allow the device to keep pace with evolving technology. When dependable, code-compliant egress performance is essential, Von Duprin delivers proven commercial-grade reliability.