Von Duprin 5547F-4ft Fire Rated Narrow Stile Concealed Vertical Rod Exit Device, Less Dogging

Von Duprin 5547F-4ft Fire Rated Narrow Stile Concealed Vertical Rod Exit Device, Less Dogging

Commercial-Grade Concealed Vertical Rod Exit Device for Narrow Stile Metal Doors

The Von Duprin 5547F-4ft is a fire rated concealed vertical rod exit device from the trusted 55 Series, engineered for single or double metal doors with narrow stile profiles as slim as 1-3/4" (44 mm). Specified for 2-1/4" door applications, this 4-foot (48") device accommodates door heights from 6'8" to 8'0" and is field reversible for flexible handing. Certified to ANSI/BHMA A156.3, 2008 Grade 1 and listed under ANSI/UL 10C for fire-rated installations, the 5547F-4ft delivers dependable life-safety performance in demanding commercial environments. The Less Dogging configuration ensures the latch remains active at all times, supporting fire-rated door compliance.

Professional Features & Benefits

• Narrow Stile Compatibility: Fits door stiles as narrow as 1-3/4" (44 mm), specified for 2-1/4" doors, making it ideal for narrow stile metal door applications where space is at a premium.
• 4-Foot (48") Device Size: Available in a 48" length that is field sizeable for single and double door applications, providing installation flexibility across a range of opening widths.
• Door Height Range: Standard device accommodates door heights from 6'8" to 8'0", covering the most common commercial door height specifications.
• Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated installations, ensuring compliance with life-safety codes on fire-rated door assemblies.
• Grade 1 Certification: ANSI/BHMA A156.3, 2008 Grade 1 certified along with ANSI/UL 305 and CAN/ULC-S132 listings, confirming the highest level of commercial hardware performance and reliability.
• Field Reversible Handing: Door hand direction is field reversible, simplifying installation and reducing the need for special-order configurations on-site.
• Less Dogging Configuration: Supplied without dogging capability to maintain active latch engagement at all times, a requirement for fire-rated door assemblies.
• Concealed Vertical Rod Design: The 47-series concealed vertical rod mechanism provides a clean aesthetic while delivering secure top and bottom latching for single or double metal doors.
• Versatile Options Available: Compatible with E8875 electrified option for access control or fire alarm integration, RX door monitoring switch, and KN knurling on crossbars for tactile hazard warning on doors leading to stairs, loading platforms, boiler rooms, and similar areas.
• Fastener Inclusion: Includes screw pack for 1-1/4" and 2-1/4" thick metal/wood doors for straightforward installation across common door constructions.

Technical Specifications

• Product Group: Exit Devices and Trim
• Series: 55 Series
• Grade: Grade 1
• Fasteners: Screw pack for 1-1/4" and 2-1/4" thick medal/wood doors.
• Product Subgroup: Exit Devices - Vertical Rod
• Product Type: Exit Devices - Concealed Vertical Rod
• Subcategory: Concealed Vertical Rod Exit Devices
• Latch Throw: 1/2"
• Commercial/Residential: Commercial
• Stile Type: Narrow Stile
• Door Hand Direction: Field Reversible
• Door Thickness Range: 1-3/4"
• Product Size: 48"
• Dogging Configuration: Less Dogging
• Product Dimension: 7-1/4" x 1-1/4" x 2-1/4" (Hinge Stile Case), 7-1/4" x 1-1/4" x 2-1/4" (Lock Stile Case)
• Fire Rating: Yes
• Product Projection: 3-3/4"
• Product Style: Cross Bars
• Product Category: Exit Devices and Trim
• Department: Door Hardware

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Government and Municipal Buildings
• Historical and Retro-Inspired Architecture

Why Choose Von Duprin Quality?

Von Duprin 55 Series concealed vertical rod exit devices are built to the highest commercial standards, earning ANSI/BHMA A156.3, 2008 Grade 1 certification and UL listings under ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132. The 5547F-4ft features a field-reversible design, a 48" field-sizeable crossbar, and case dimensions of 7-1/4" x 1-1/4" x 2-1/4" engineered for narrow stile metal doors in demanding commercial applications. Trusted by architects, contractors, and facility managers, Von Duprin exit devices deliver the dependable life-safety performance required in high-traffic commercial environments.