Von Duprin 55-4ft 4 ft Narrow ...
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$3,415.80
Von Duprin 55-4ft 4 ft Narrow Stile Crossbar Rim Exit Device, Grade 1, Field Reversible

Von Duprin 55-4ft 4 ft Narrow Stile Crossbar Rim Exit Device, Grade 1, Field Reversible

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Model: 55 EO US4-4
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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 thickness does the Von Duprin 55-4ft mount on?
    1-3/4 inch doors. The device ships with a screw pack covering 1-1/4 and 2-1/4 inch thick metal/wood doors with SNB (sex nut and bolt) hardware included, so through-bolting is handled out of the box. Standard commercial hollow metal and aluminum doors are 1-3/4 inches, so most commercial openings take it as supplied.
    2) Will a 48 inch exit device work on a narrower door, or do I need to order a shorter one?
    The 48 inch 55 Series device is field sizeable, so it can be cut down on site to suit the door width rather than ordered to an exact size. That's what makes it workable across both single doors and pairs, including openings with a mullion. Order the 4-foot for doors up to 48 inches wide and size it at install.
    3) Do I have to specify handing for the Von Duprin 55 crossbar device?
    Handing is selected at order (LHR left hand reverse or RHR right hand reverse), but the device itself is field reversible, so an installer can change hand on site without extra parts or a factory return. That's useful for a property manager stocking one device for several openings rather than one per hand.
    4) Will the Von Duprin 55 latch into my existing rim strike?
    The 55 Series rim latch has a 3/4 inch throw and engages a surface rim strike mounted on the frame stop, not a mortise pocket. If the existing opening already runs a rim exit device with a standard rim strike at the same latch centerline, the throw will engage it. If the door is currently on a mortise lock or a vertical rod device, the frame prep is different and a rim strike has to be added.
    5) How do I secure a pair of doors with no mullion using a Von Duprin 55?
    You don't, with the rim version. A rim device latches into a strike on the frame at the lock stile, so a pair needs a mullion between the leaves for the rim latch to catch. The 55 Series is also built as a surface vertical rod (27), concealed vertical rod (47), and mortise lock (75) configuration; the vertical rod versions latch at the head and threshold, which is what lets a pair work without a center mullion.
    6) The door is a wood door - can a Von Duprin 55 go on it, and what narrow stile device can?
    The Von Duprin 55-4ft is not wood door compatible. For a narrow stile opening on a wood door, the Adams Rite 8700 Series is a 30 inch narrow stile rim exit device with starwheel interlocking, rated Grade 1 and listed as wood door compatible, and the Adams Rite 3700 Series is the fire rated narrow stile equivalent, also Grade 1 and wood door compatible. Note the Adams Rite 8800 Series, though narrow stile and Grade 1, is not wood door compatible, so it is not the one to reach for on a wood leaf.
    7) What is the closest narrow stile Grade 1 rim exit device to the Von Duprin 55 in a 48 inch length?
    The Von Duprin 55-4ft is a 48 inch narrow stile rim exit device certified to ANSI/BHMA Grade 1 with a crossbar actuator and hex key dogging. The closest narrow stile Grade 1 rim alternates are the Corbin Russwin ED4200, a 36 inch narrow stile rim device rated Grade 1 for 1-3/4 inch doors, and the Falcon 1590EO, a 42 inch narrow stile Grade 1 rim device for 1-3/4 inch doors in exit only function. Both are narrow stile like the 55, but they come in shorter device lengths, so on a wide leaf confirm the device length covers the door width before you order.
    8) The opening needs a fire rated exit device on a narrow stile aluminum door - what replaces a Von Duprin 55?
    The Von Duprin 55-4ft carries no fire rating, so it belongs on a non-fire opening. For a fire rated narrow stile door, the Adams Rite 3700 Series is a 30 inch fire rated narrow stile rim exit device certified Grade 1 with starwheel interlocking. If the leaf is wider than the 3700 covers, the Dexter ED1000-R-F-EO is a Grade 1 fire rated rim exit device, and the Marks USA M9900F comes in both 36 inch and 48 inch fire rated exit only rim versions. Match the device length to the door width and verify the label on the door leaf allows the device you pick.
    9) Can a wide stile rim exit device be used in place of a Von Duprin 55 narrow stile device?
    No. The Von Duprin 55-4ft is built for narrow stile doors and fits stiles as narrow as 1-3/4 inches, so its case footprint suits a narrow aluminum stile. Wide stile rim devices such as the Corbin Russwin ED3200, a 48 inch crossbar rim device for wide stile 1-3/4 inch doors, the Dormakaba 9300A, a 48 inch wide stile rim device for 1-3/4 to 2-1/4 inch doors, and the CRL Jackson 1095, a 48 inch crossbar rim panic device for wide stile doors, are the same 48 inch class but are specified for wide stile leaves. On a narrow stile aluminum entrance they are not an equivalent - the mounting face on the stile is the deciding dimension, not the device length.
    10) What else could I use instead of a Von Duprin 55 on a narrow stile aluminum storefront door?
    Several narrow stile rim devices cover the same opening. The Corbin Russwin ED4200 is a Grade 1 narrow stile rim device for 1-3/4 inch doors that accepts trim. Falcon's 1590EO and 1790EO are Grade 1 narrow stile exit-only devices for 1-3/4 inch doors. The Detex 40 Advantex is an extra heavy duty Grade 1 narrow stile option. Where you need a night latch function specifically, the Sargent 8504 is a Grade 1 narrow stile rim device built for that function. None of these is a crossbar device, so if you're matching existing crossbar hardware in the building, the 55 stays the match.
    11) What trim functions can I order on the Von Duprin 55 rim device?
    Six functions: EO exit only, NL night latch, NL-OP night latch cylinder assembly with optional pull, L lever, L-BE lever with blank escutcheon, and DT dummy trim. If you pick a lever function you also choose the lever style, 06 (the default on L trim), 03, 07, or 17. EO is the choice where the door is egress only and never entered from outside; NL is what you want when a key from outside should retract the latch.
    12) Can the Von Duprin 55 be held open for daytime traffic?
    Yes, it uses hex key dogging. Insert the hex key and depress the crossbar to hold the latch retracted so the door pushes free, then undog to restore latching at close of business. Since the 55-4ft isn't fire rated, mechanical dogging is permitted on it; on a labelled fire door mechanical dogging is not allowed at all.
    13) Can I tie a Von Duprin 55 exit device into an access control system?
    Yes, two ways. The RX request-to-exit switch is orderable directly on the device and signals the access control panel or alarm when the crossbar is pushed, which is how you keep the door monitored without a separate bar switch. Separately the E8875 electrified option supports access control, fire alarm, or remote switching integration. Specify RX at order time; it isn't a field add.
    14) Is the Von Duprin 55 tough enough for a high traffic school or hospital exit?
    It's certified to ANSI/BHMA A156.3, 2008 Grade 1, the top commercial grade, and it's a commercial-only device. For an opening that takes abuse, the reinforced crossbar (RCB) option is orderable in place of the standard crossbar. Knurled crossbar (KN) is the other option, and that one is a tactile hazard warning rather than a strength upgrade, used where code calls for warning on a door to a hazardous area.
    15) What's the difference between a crossbar exit device and a push pad one?
    A crossbar device uses a horizontal bar you push, which is the older look and what the Von Duprin 55 Series is; push pad devices use a flat pad that runs most of the door width. Both satisfy panic egress. Crossbar suits retrofit into buildings that already run crossbar hardware and period or retro architecture. If you want push pad in a comparable size, the CRL Jackson 1295 Series is a non-handed push pad rim device, and the Cal-Royal 5500 is a 48 inch push bar rim device.
    16) Can I convert a Von Duprin 55 exit only device to night latch later?
    Yes. The 55 Series NL conversion kit, part 050105, changes an exit only device over to night latch. Von Duprin also stocks the 55NL center case kit (050184) and the left and right hand NL cams (050356 and 050355) as individual service parts, so a locksmith can rebuild rather than replace the whole device.
    17) What crossbar exit devices are comparable to the Von Duprin 55 if the building wants the same classic crossbar look on other doors?
    The Von Duprin 55-4ft uses a crossbar actuator rather than a push pad. For matching the crossbar look elsewhere in a building, the Corbin Russwin ED3200 is a 48 inch crossbar rim exit device rated Grade 1 for wide stile 1-3/4 inch doors, and the CRL Jackson 1095 is a 48 inch crossbar rim panic device in exit only function for wide stile doors. Both keep the horizontal bar profile; the 55 is the one to use where the stile is narrow, and the two crossbar peers cover wide stile leaves in the same run of doors.
    18) What is the difference between a Von Duprin 55 and a push pad narrow stile device like the BEST 2401 or Falcon 19-R?
    The Von Duprin 55-4ft is a crossbar style narrow stile rim device, field reversible with LHR and RHR handing offered. The BEST Precision 2401 is a narrow stile rim exit device in exit only function that is non-handed, and the Falcon 19-R is a 36 inch narrow stile Grade 1 rim device, exit only, for 1-3/4 inch doors. All three mount on a narrow stile, but the 55 carries the horizontal crossbar and offers trim functions including lever, night latch and dummy, while the 2401 and 19-R are exit only devices. Choose by whether the opening needs outside trim and by which actuator style the building already runs.
    19) Is a Grade 2 rim exit device an acceptable substitute for the Von Duprin 55 on a high traffic opening?
    The Von Duprin 55-4ft is certified to ANSI/BHMA Grade 1 for commercial use. The Cal-Royal 5500 is a 48 inch rim exit device with a push bar carrying a Grade 2 rating and a heavy duty level, and the Cal-Royal A9820 is a 48 inch exit only rim device also rated Grade 2 heavy duty. They match the 55 on device length, but on an opening where the specification or facility standard calls for Grade 1 they do not satisfy it. If Grade 1 at 48 inches is the requirement, stay with the 55 or a Grade 1 peer.
    20) The doors are 2-1/4 inch thick - does the Von Duprin 55 suit them or is another device a better fit?
    The Von Duprin 55-4ft ships with a screw pack for 1-1/4 inch and 2-1/4 inch thick metal and wood doors with SNB included, and its 55 Series is specified for 2-1/4 inch doors. Peers that publish coverage into that thickness are the Adams Rite 8800 Series, a narrow stile Grade 1 rim device listed for 1-3/4 inch to 2-1/4 inch doors, and the Dormakaba 9300A, a 48 inch wide stile Grade 1 rim device listed for 1-3/4 inch to 2-1/4 inch doors. The 8800 keeps the narrow stile mounting; the 9300A does not.
    21) What narrow stile device has hex key dogging like the Von Duprin 55?
    The Von Duprin 55-4ft uses hex key dogging for hold-open. Among narrow stile peers, the Stanley Security QED200 Series is a Grade 1 heavy duty narrow stile rim exit device with hex key dogging, and the Dormakaba QED200 is a Grade 1 heavy duty narrow exit device supplied as a 36 inch device with a 7 foot rod. If the maintenance team already carries hex keys for the 55, those keep the same dogging routine across the building.
    22) Is an electrified exit bar like the SDC or Securitron a substitute for a Von Duprin 55 with the RX switch option?
    Not directly. The Von Duprin 55-4ft is a mechanical rim exit device that can be ordered with an RX request to exit switch, so the latching and egress are mechanical and the switch reports the exit. The SDC MSB550 is a 36 inch mechanical switch bar with electromagnetic lock release for narrow or wide stile doors, and the Securitron EMB is an electromechanical exit bar for 2-1/4 inch doors. Those bars work with an electromagnetic locking arrangement rather than providing the 55 rim latch, so swapping one in changes how the opening secures, not just how it signals.
    23) The opening needs a night latch function on a narrow stile door - what are the options alongside the Von Duprin 55?
    The Von Duprin 55-4ft is offered in NL night latch and NL-OP night latch with optional pull trim functions. A narrow stile alternate in that function is the Sargent 8504, a Grade 1 narrow stile rim exit device in night latch function. Both give outside key retraction on a narrow stile leaf; the 55 comes in the crossbar style at a 48 inch device length.
    24) What device covers a 48 inch narrow stile opening if the Von Duprin 55 crossbar is not wanted?
    The Von Duprin 55-4ft covers a 48 inch narrow stile opening in crossbar style. If a non-crossbar 48 inch device is preferred, the Dexter ED1000 Series comes in a 4FT Grade 1 rim exit device, and the Sargent 2828 is a Grade 1 reversible rim exit device for a 48 inch minimum door width in exit only function with a wide stile design. The Dexter is the closer swap on device length; the Sargent 2828 is wide stile, so confirm the stile face before specifying it.
    25) What finishes does the Von Duprin 55 crossbar device come in to match my other doors?
    Eight: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 625 bright chrome, 626 satin chrome, 643E aged bronze, and 693 black. If you're standardizing a building, 626 satin chrome and 613 oil rubbed bronze are the two that most commonly match existing commercial lever and closer hardware.
    26) Do I need a special tool to service or dog a Von Duprin 55?
    A hex key, and Von Duprin stocks the correct one as part 103866, the 55 Series special hex key for exit device maintenance. Keep one with the building keys, since without it the device can't be dogged open or undogged. Spare dog screws are stocked as part 090029.
    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 continental U.S. Need it urgently? Contact Us for expedited shipping options.
    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?
    You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
    Why buy the Von Duprin 55 EO US4-4 from ZenSupply?
    ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

    Product Reviews

    • 5
      VON DUPRIN 55 SERIES

      Posted by Michael Ranieri on Mar 8th 2025

      This Von Duprin bar handle worked perfectly. Our tech removed the existing handle & installed the new Von Duprin 55 series in minutes. We couldn't be more satisfied.

    • 5
      Quality

      Posted by Michael Ranieri on Mar 7th 2025

      This product is high-quality. Absolutely awesome. It replaced the 88 series door bar handle and was quickly installed and operable within minutes.

    !