Von Duprin KR4854-S Keyed Remo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,087.00
$1,785.00
Von Duprin KR4854-S Keyed Removable Steel Mullion Prepped for 299 Strike and 6111 Electric Strike

Von Duprin KR4854-S Keyed Removable Steel Mullion Prepped for 299 Strike and 6111 Electric Strike

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Model: VON-KR4854 7 FT 6 IN SP28
$2,087.00
$1,785.00
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,087.00
$1,785.00
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Von Duprin KR4854-S Keyed Removable Steel Mullion Prepped for 299 Strike and 6111 Electric Strike

Single-Operation Keyed Removal for Double Door Openings with Rim Devices

The Von Duprin KR4854-S Keyed Removable Steel Mullion delivers single door performance in double door openings equipped with rim exit devices. Engineered for fast, convenient removal through a single operation of the mortise cylinder, this Grade 1 commercial mullion allows large equipment or furniture to pass freely through the opening once removed. Constructed of steel measuring 2" (51mm) wide and 3" (76mm) deep with a wall thickness of 1/8" (3mm), the KR4854-S is prepped for one 299 Strike and one 6111 Electric Strike, and is available in SP28 and SP313 finishes.

Professional Features & Benefits

  • Steel Construction Dimensions: Mullion body measures 2" (51mm) wide and 3" (76mm) deep with a wall thickness of 1/8" (3mm) for robust, commercial-grade structural integrity.
  • Keyed Removable Operation: Single-operation removal via a 1-1/4" mortise cylinder with a straight cam (Schlage cam reference B502-191) makes removal faster and easier than standard mullions.
  • Self-Locking Re-Installation: The unit self-locks when re-installed without use of the cylinder key, ensuring secure, tool-free reinstallation after passage of large equipment or furniture.
  • Strike Compatibility: Factory prepped for one 299 Strike and one 6111 Electric Strike, providing versatile configuration options for both standard and electrified openings.
  • Easy Removal Mechanism: Mullion is removed by loosening the bottom set screw and removing the top fitting cover; the top mullion fitting attaches to the frame and is concealed by the fitting cover for a clean appearance.
  • Grade 1 Commercial Rating: Rated Grade 1 for demanding commercial applications requiring reliable, long-term performance in high-traffic double door openings.
  • Finish Options: Available in SP28 and SP313 finishes to coordinate with surrounding door hardware and architectural requirements.
  • Cylinder Sold Separately: Requires a 1-1/4" mortise cylinder with a straight cam (Schlage cam reference B502-191); cylinders are not included and must be ordered separately.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: KR4854
  • Grade: Grade 1
  • Product Subgroup: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Type: Exit Devices Parts
  • Commercial/Residential: Commercial
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Fire Rating: No
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings with Double Door Openings
  • Educational Facilities Requiring Accessible Egress
  • Healthcare Institutions with High-Traffic Corridors
  • Retail Establishments with Wide Entry Points
  • Industrial and Warehouse Facilities Requiring Equipment Access
  • Government and Municipal Buildings
  • Multi-Tenant Residential and Mixed-Use Properties

Why Choose Von Duprin Quality?

Von Duprin keyed removable steel mullion products are built to Grade 1 commercial standards, featuring robust steel construction at 2" (51mm) wide and 3" (76mm) deep with a 1/8" (3mm) wall thickness for lasting durability in demanding environments. The KR4854-S series simplifies mullion removal to a single cylinder operation while providing automatic self-locking reinstallation, reducing downtime and maintenance effort. Engineered for professional commercial applications where dependable performance and operational efficiency are essential.

Manufacturer Resources

Von Duprin 98/99 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
KR4854
Grade:
Grade 1
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Type:
Exit Devices Parts
Commercial/Residential:
Commercial
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Fire Rating:
No
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin VON-KR4854 7 FT 6 IN SP28 – Frequently Asked Questions

1) What is the Von Duprin KR4854 series mullion used for?
The KR4854 series is a keyed removable steel mullion designed for double door openings. It provides structural support and security while allowing authorized personnel to remove it when needed for moving large items or emergency egress.
2) What door types and sizes are compatible with this mullion?
Compatible with standard commercial double door openings. Verify exact door width and height requirements with manufacturer specifications. Check that door frame construction can support mullion mounting hardware.
3) Does this mullion work with right-hand or left-hand doors?
Center-mounted mullions like the KR4854 series are typically universal for door handing. The mullion mounts between the doors regardless of swing direction. Confirm compatibility with your specific door configuration.
4) What finish options are available for the KR4854 series?
Steel mullions typically come in standard commercial finishes. Check with manufacturer specifications for available powder coat colors and specialty finishes. Select finish to match existing door hardware.
5) What security grade does this keyed removable mullion provide?
Security level depends on the keying system and mounting method. Steel construction provides good structural integrity. Verify grade requirements with local codes and security specifications for your application.
6) Does this mullion meet building code requirements?
Removable mullions must comply with egress and accessibility codes. Check local building codes for requirements on keyed removal systems. Ensure authorized personnel can quickly remove mullion during emergencies.
7) What components are included with the KR4854 mullion?
Typical components include the steel mullion post, keyed removal mechanism, mounting brackets, and installation hardware. Verify complete parts list with manufacturer documentation before installation.
8) What are the basic installation requirements?
Installation requires proper floor anchoring and head frame attachment. Follow manufacturer template for precise positioning. Ensure adequate structural support in floor and overhead frame. Professional installation recommended.
9) How do you maintain a keyed removable mullion?
Regular maintenance includes lubricating the keyed removal mechanism and checking mounting hardware tightness. Test removal function periodically to ensure proper operation. Clean steel surfaces to prevent corrosion.
10) Are there other Von Duprin mullion models available?
Von Duprin offers various mullion styles including fixed, removable, and flush bolt mullions. Browse our Von Duprin collection for alternative models and compatible hardware options.
11) What field conditions affect mullion installation?
Consider floor material thickness, overhead clearance, and door alignment. Uneven floors may require shimming. Check for adequate space around mullion for door operation and key access.
How fast can I get the Von Duprin VON-KR4854 7 FT 6 IN SP28 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 VON-KR4854 7 FT 6 IN SP28 come with a warranty?
Absolutely. The Von Duprin VON-KR4854 7 FT 6 IN SP28 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 VON-KR4854 7 FT 6 IN SP28?
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 VON-KR4854 7 FT 6 IN SP28 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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