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Von Duprin KR4854 - Keyed Removable Steel Mullion, Prepped For One 299 Strike and One 6111 Electric Strike
Mullions
Removable steel mullions provide single door performance in double door openings with rim devices. Mullions are easily removed by loosening bottom set screw and removing top fitting cover. The top mullion fitting is attached to the frame and is concealed by the fitting cover. Steel mullions are 2" (51mm) wide and 3" (76mm) deep, with a wall thickness of 1 /8" (3mm).
Mullions are shipped with mounting screws and prepared for strikes. Strikes are not included except where indicated. Steel mullions are available in SP28 and SP313 finishes.
KR – Keyed removable steel mullions makes removal faster and easier by a single operation of the Mortise cylinder. Once mullion is removed, large equipment or furniture can freely pass through the opening. The unit will self lock when re-installed, without use of the cylinder key. Uses a 1 1/4" Mortise cylinder with a straight cam (Schlage cam reference B502-191). Cylinders are sold separately. Prefix mullion model with “KR”
Manufacturer Resources
Product Specs
- Category:
- Exit Devices and Trim
- 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
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?
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Can I return it if it doesn’t work for me?
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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?
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