Von Duprin 3548A-3ft Concealed Vertical Rod Exit Device for Wood Doors, Narrow Stile, 36" Smooth Case

Von Duprin 3548A-3ft Concealed Vertical Rod Exit Device for Wood Doors, Narrow Stile, 36" Smooth Case

Heavy-Duty Narrow Stile Concealed Vertical Rod Exit Device for Institutional and Commercial Applications

The Von Duprin 3548A-3ft is a professional-grade, narrow stile concealed vertical rod exit device engineered for wood doors in demanding commercial and institutional environments. Featuring a smooth mechanism case, this 36" device accommodates door stiles as narrow as 2-1/8" (44 mm) for standard applications and wood door stiles as narrow as 4" (102 mm), with a 1-3/4" door thickness range and a 3/4" latch throw. Certified to ANSI/BHMA A156.3 2014 Grade 1 standards and UL listed for panic exit hardware, the 3548A-3ft delivers the reliability required in schools, hospitals, and government facilities.

Professional Features & Benefits

• Narrow Stile Compatibility: Fits door stiles as narrow as 2-1/8" (44 mm) for standard doors and wood door stiles as narrow as 4" (102 mm), providing versatile installation options across a wide range of door configurations.
• Smooth Mechanism Case: The 35A Series smooth case design distinguishes this device from the grooved 33A Series, offering a refined architectural appearance suited for upscale commercial and institutional settings.
• Concealed Vertical Rod with 1-1/2" Bottom Bolt: The "48" device type designation indicates a concealed vertical rod configuration with a 1-1/2" bottom bolt, providing secure top and bottom latching while maintaining a clean door appearance.
• Grade 1 Certified Performance: ANSI/BHMA A156.3 2014 Grade 1 certified and UL listed (ANSI/UL 305; ANSI/UL 10C for fire-rated configurations; CAN/ULC-S104 for fire-rated; CAN/ULC-S132), meeting the highest industry standards for panic exit hardware.
• Non-Handed Design: The concealed vertical rod device is non-handed (except when the SS signal switch option is used), simplifying inventory management and installation across multiple openings.
• Field-Configurable Options: A variety of field-configurable options are available, including retrofit kits (CDSI/HDSI dogging indicators, QEL electronic latch retraction, RX request-to-exit, and LX latchbolt monitoring switches) to keep pace with evolving facility technology needs.
• Hex Key Dogging: Equipped with hex key dogging for convenient hold-open functionality in appropriate applications.
• ADA and 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 meeting NFPA and IBC requirements, 15-second delay with nuisance alarm).
• Included Fasteners: Includes 1-3/4" and 2-1/4" wood/metal door fasteners with SNB included for straightforward installation on wood doors.

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: Concealed Vertical Rod Exit Devices
• Latch Throw: 3/4"
• Product Type: Exit Devices - Concealed 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"
• Dogging Configuration: Hex Key Dogging
• Product Dimension: 8-3/16" x 1-9/16" x 2-13/32"
• Fire Rating: No
• Product Projection: 3-13/16"
• Product Style: Push Pads
• Product Category: Exit Devices and Trim
• Department: Door Hardware

Professional Applications

• Educational Facilities (Schools and Universities)
• Healthcare Institutions (Hospitals and Clinics)
• Government and Municipal Buildings
• Commercial Office Buildings
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Retail Establishments

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are engineered to the highest industry standards, with the 3548A-3ft certified to ANSI/BHMA A156.3 2014 Grade 1 and UL listed for panic exit hardware under ANSI/UL 305. The smooth mechanism case, non-handed design, and broad field-configurable retrofit options make this device a dependable long-term investment for institutional and commercial facilities. Designed specifically for high-use and high-abuse environments including schools, hospitals, and government buildings, Von Duprin exit devices deliver the professional-grade performance that demanding applications require.