Von Duprin KR54 Keyed Removabl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$759.00
$511.83
Von Duprin KR54 Keyed Removable Mullion Retrofit Kit for 1654 and 4954 Mullions

Von Duprin KR54 Keyed Removable Mullion Retrofit Kit for 1654 and 4954 Mullions

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Model: KR54-28
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$759.00
$511.83
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Von Duprin KR54 Keyed Removable Mullion Retrofit Kit for 1654 and 4954 Mullions

Professional Mullion Retrofit Accessory for Commercial Exit Device Applications

The Von Duprin KR54 Keyed Removable Mullion Retrofit Kit is a purpose-built accessory designed to upgrade or retrofit 1654 and 4954 mullions with keyed removable functionality. This kit provides all necessary hardware components for a complete retrofit installation, including precisely sized fasteners to ensure a secure and professional fit. Available in two configurations—KR54-28 and KR54-F-28—each variant includes the specific screw assortment required for compatible mullion assemblies.

Professional Features & Benefits

  • Broad Mullion Compatibility: Specifically engineered for use with 1654 and 4954 mullions, enabling a keyed removable upgrade on existing installations without full hardware replacement.
  • Complete Hardware Assortment (KR54-28): Includes 1/4-20 x 1", 8-32 x 1/4", 5/16-18 x 1-1/4", and 8-32 x 3/8" fasteners to cover all required mounting points.
  • Extended Hardware Assortment (KR54-F-28): Includes 1/4-20 x 3/8", 1/4-20 x 1", 8-32 x 1/4", 5/16-18 x 1-1/4", and 8-32 x 3/8" fasteners for applications requiring the additional 1/4-20 x 3/8" screw size.
  • Keyed Removable Functionality: Provides the keyed removable mullion feature, allowing authorized personnel to remove the mullion with a key for enhanced operational flexibility in commercial door openings.
  • Retrofit Design: Designed as a retrofit kit for existing 1654 and 4954 mullion installations, minimizing downtime and simplifying the upgrade process.
  • Von Duprin Quality Construction: Manufactured to Von Duprin’s commercial-grade standards, ensuring reliable performance and compatibility with the specified mullion series.
  • Exit Device Parts Category: Classified as an Exit Devices Parts accessory within the Mullions product group, confirming suitability for professional door hardware applications.

Technical Specifications

  • Subcategory: Parts and Accessories
  • Product Group: Mullions
  • Product Subgroup: Parts and Accessories
  • Product Category: Exit Devices Parts
  • For Use With: KR54
  • Product Function: Keyed Removable Mullion Kit
  • Screw Size: 1/4-20 x 1"; 8-32 x 1/4"; 5/16-18 x 1-1/4"; 8-32 x 3/8"
  • 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 mullion parts and accessories are engineered to meet the demands of commercial door hardware installations, delivering reliable compatibility and consistent performance with the 1654 and 4954 mullion series. Each KR54 Retrofit Kit is manufactured to Von Duprin’s professional-grade standards, providing the precise fastener assortments needed for a complete and secure retrofit. Trusted by door hardware professionals across a wide range of commercial applications where dependable performance is essential.

Manufacturer Resources

Von Duprin 88 Series Catalog

Product Specs

Subcategory:
Parts and Accessories
Product Group:
Mullions
Product Subgroup:
Parts and Accessories
Product Category:
Exit Devices Parts
For Use With:
KR54
Product Function:
Keyed Removable Mullion Kit
Screw Size:
1/4-20 x 1"; 8-32 x 1/4"; 5/16-18 x 1-1/4"; 8-32 x 3/8"
Department:
Door Hardware

Von Duprin KR54-28 – Frequently Asked Questions

1) What does the Von Duprin KR54 kit actually do to a 1654 or 4954 mullion?
The KR54 is a retrofit kit that converts an existing Von Duprin 1654 or 4954 mullion to keyed removable operation, so authorized staff can pull the mullion with a key when you need the full opening clear for moving equipment or furniture through. It is a hardware kit, not a mullion itself. You keep the mullion tube already in the opening and add the keyed removable function to it.
2) Which Von Duprin KR54 version do I order for a fire-rated opening?
Order the KR54-F. The plain KR54 is the retrofit kit for 1654 and 4954 mullions; the KR54-F is the fire-rated version and covers 98, 9954, 4754 and 4854 mullions. Match the kit to the mullion model already in the opening, because the two kits cover different mullion families, not just different ratings.
3) Do I need to replace the whole mullion to get keyed removable function, or can I convert the one I have?
If your mullion is a Von Duprin 1654 or 4954, you can convert it in place with the KR54 kit rather than buying a new removable mullion assembly. The kit supplies the keyed removable hardware and all the fasteners for the conversion. That keeps the existing tube, the existing top and bottom fittings, and the existing prep in the frame, which is why property managers usually go this route on a working opening.
4) What screws come in the Von Duprin KR54 mullion retrofit kit?
The KR54-28 kit ships with 1/4-20 x 1 inch, 8-32 x 1/4 inch, 5/16-18 x 1-1/4 inch and 8-32 x 3/8 inch fasteners, which cover every mounting point in the conversion. The KR54-F-28 kit carries those same four plus a 1/4-20 x 3/8 inch screw that the fire-rated mullion mounting requires. No separate fastener order is needed for the retrofit itself.
5) Does the Von Duprin KR54 kit include a cylinder?
The KR54 supplies the keyed removable mullion hardware and the fastener set. Plan on sourcing the mortise cylinder that keys the removable function separately so it can be keyed into your existing system, which is what most locksmiths want anyway rather than a factory keying they have to rekey on arrival.
6) Is a keyed removable mullion the right choice, or should I use a standard fixed mullion?
A fixed mullion is the simpler answer if the opening never has to pass wide loads. Go keyed removable when the pair of doors has to open up clear from time to time, for freight, beds, or equipment, and you want that limited to whoever holds the key. The KR54 gets you there without swapping the mullion out, provided the existing one is a 1654 or 4954 (or a 98, 9954, 4754 or 4854 with the KR54-F).
How fast can I get the Von Duprin KR54-28 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 KR54-28 come with a warranty?
Absolutely. The Von Duprin KR54-28 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 KR54-28?
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 KR54-28 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.
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