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Von Duprin 55-4ft 4 ft Narrow Stile Crossbar Rim Exit Device, Grade 1, Field Reversible
Classic Crossbar Design for Narrow Stile Single and Double Door Applications
The Von Duprin 55-4ft is a 4-foot narrow stile crossbar rim exit device engineered for single and double door applications, including those with mullion configurations. Designed to fit door stiles as narrow as 1-3/4" (44 mm) and specified for 2-1/4" doors, this device is fully field reversible for flexible installation. Certified to ANSI/BHMA A156.3, 2008 Grade 1 standards and UL listed for accident hazard installations, the 55 Series delivers dependable, code-compliant egress performance in demanding commercial environments.
Professional Features & Benefits
- Narrow Stile Compatibility: Fits door stiles as narrow as 1-3/4" (44 mm) and is specified for 2-1/4" doors, making it ideal for narrow stile door configurations where space is limited.
- 48" Device Length: Available in a 4-foot (48") length that is field sizeable for both single and double door applications, providing versatile coverage across a wide range of openings.
- Field Reversible Design: The device is field reversible, allowing installers to adapt hand direction on-site without requiring additional parts or factory modification.
- ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3, 2008 Grade 1 certification, the highest commercial grade standard, ensuring long-term reliability in high-traffic applications.
- Comprehensive Certification Compliance: Listed to ANSI/UL 10C (fire rated configurations), ANSI/UL 305, CAN/ULC-S104 (fire rated configurations), and CAN/ULC-S132 for broad code compliance across North American jurisdictions.
- Hex Key Dogging Configuration: Features hex key dogging for convenient hold-open functionality, supporting smooth traffic flow in high-use commercial settings.
- 3/4" Latch Throw: Provides a 3/4" latch throw for secure door latching and reliable egress performance.
- Multiple Device Type Options: Available in rim, surface-mounted vertical rod (27), concealed vertical rod (47), and mortise lock (75) configurations to suit a variety of door and frame conditions.
- Versatile Trim and Function Options: Supports multiple trim functions including Classroom, Dummy, Exit Only, Passage, and Storeroom, with popular 990 pull trim offering five standard functions.
- Electronic and Mechanical Options: Compatible with E8875 electrified option for access control, fire alarm, or remote switching integration; RX switch for door monitoring; and KN knurling on crossbars for tactile hazard warning.
- Fastener Inclusion: Includes screw pack for 1-1/4" and 2-1/4" thick metal/wood doors with SNB included for complete installation readiness.
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. SNB included
- Product Subgroup: Exit Devices - Rim
- Subcategory: Rim Exit Devices
- Latch Throw: 3/4"
- Product Type: Exit Devices - Rim
- Commercial/Residential: Commercial
- Stile Type: Narrow Stile
- Wood Door Compatible: No
- Product Model: 55-4'
- Door Hand Direction: Reversible
- Door Thickness Range: 1-3/4"
- Product Size: 48"
- Dogging Configuration: Hex Key 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: No
- 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
- Multi-Tenant Residential Properties
- Government and Municipal Buildings
Why Choose Von Duprin Quality?
Von Duprin rim exit device products deliver professional-grade reliability backed by ANSI/BHMA A156.3, 2008 Grade 1 certification and UL listing for accident hazard installations. The 55 Series crossbar design is engineered to fit narrow stile doors as slim as 1-3/4" (44 mm), with a field reversible configuration and 48" field-sizeable length that adapts to single and double door applications. Trusted for use in retro-inspired architecture and demanding commercial environments, Von Duprin exit devices are built to meet the highest standards of egress safety and code compliance.
Manufacturer Resources
Von Duprin 98/99 Series Catalog
Product Specs
- 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. SNB included
- Product Subgroup:
- Exit Devices - Rim
- Subcategory:
- Rim Exit Devices
- Latch Throw:
- 3/4"
- Product Type:
- Exit Devices - Rim
- Commercial/Residential:
- Commercial
- Stile Type:
- Narrow Stile
- Wood Door Compatible:
- No
- Product Model:
- 55-4'
- Door Hand Direction:
- Reversible
- Door Thickness Range:
- 1-3/4"
- Product Size:
- 48"
- Dogging Configuration:
- Hex Key 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:
- No
- Product Projection:
- 3-3/4"
- Product Style:
- Cross Bars
- Product Category:
- Exit Devices and Trim
- Department:
- Door Hardware
Parts & Accessories
Von Duprin 55 EO US4-4 – Frequently Asked Questions
1) What door types work with the Von Duprin 55 Series narrow stile crossbar exit device?
This device fits narrow stile aluminum doors and glass doors with 2" stiles. Common on storefronts and curtain wall systems. Verify your door stile width before ordering.
2) How do I determine the correct handing for this exit device?
Stand on the egress side facing the door. Right hand if hinges are on your right, left hand if on your left. Specify handing when ordering as devices are hand-specific.
3) What finish options are available for the 55 Series?
Standard finishes include aluminum, dark bronze, and satin chrome. Custom finishes may be available. Verify finish availability for your specific model number.
4) Does this device meet fire door requirements?
The 55 Series is UL listed for fire doors when properly installed. Check your specific model for fire rating compatibility. Follow manufacturer templates exactly for listed applications.
5) What grade rating does this exit device carry?
Von Duprin 55 Series carries Grade 1 certification. Tested for 2 million cycles and meets ANSI/BHMA A156.3 standards for heavy duty commercial use.
6) Can I add electric latch retraction to this device?
Yes, the 55 Series accepts electric latch retraction options. EL and EPL models available for access control integration. Consult electrified hardware options for your application.
7) What strike options work with this rim exit device?
Use Von Duprin 4900 series strikes for standard applications. Electric strikes like 6200/6300 series for access control. Match strike to your frame type and function needs.
8) How much door preparation is required for installation?
Rim devices require minimal door prep - mainly mounting holes for device attachment. Follow manufacturer template exactly. Frame requires strike preparation and reinforcement.
9) How do I adjust the latch and deadbolt projection?
Use the adjustment screws on the latch case. Standard projection is 1/2" for latch, 1" for deadbolt. Adjust to ensure proper engagement with strike. Test operation after adjustments.
10) What related Von Duprin models should I consider?
Consider 35 Series for standard stile doors or 98/99 Series for surface vertical rod applications. Browse our Von Duprin collection for compatible options.
11) Can this device handle high wind load conditions?
The 55 Series handles standard commercial wind loads when properly installed. For extreme conditions, verify door and frame reinforcement requirements. Consider additional bracing if needed.
12) What is the maximum door weight capacity for this device?
Check manufacturer specifications for your specific model. Most 55 Series devices handle standard commercial glass doors. Verify weight limits with heavy glass or oversized doors.
How fast can I get the Von Duprin 55 EO US4-4 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Von Duprin 55 EO US4-4 come with a warranty?
Absolutely. The Von Duprin 55 EO US4-4 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Von Duprin 55 EO US4-4?
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