Von Duprin KR54 SP28, Key Removable Kit, For 1654 and 4954 Mullions, Aluminum Painted, 689/US28

The Von Duprin KR54-SP28 is a keyed retrofit mullion kit engineered to convert existing 1654 and 4954 mullions into key removable units. Finished in aluminum painted (689/US28), this kit lets facility managers quickly detach the mullion with a key, opening the full width of a double-door opening for moving large equipment or oversized deliveries. Built to Von Duprin's durability standards, the KR54 offers a practical upgrade path without replacing the entire mullion assembly. It's a reliable solution for commercial and institutional openings where flexible, secure access is required across paired doors equipped with exit devices.

Features

• Retrofit kit that converts 1654 and 4954 mullions to a key removable configuration.
• Key removable design allows the mullion to be detached for a full clear opening.
• Aluminum painted finish (689/US28) for a clean, consistent appearance.
• Compatible with existing Von Duprin 1654 and 4954 mullion installations.
• Durable construction suited for high-traffic commercial and institutional doors.

Functional Details

The keyed removable mullion function lets an authorized user unlock and lift out the mullion using a key, temporarily clearing the center post between paired doors. This provides an unobstructed opening when needed and allows the mullion to be reinstalled to restore normal two-door security.

• Key removable mullion kit for use with 1654 and 4954 mullions.

Included Components

The KR54 kit supplies the keyed retrofit hardware required to modify a standard 1654 or 4954 mullion into a key removable mullion.