ALUMINUM MULLION KEYED

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Answer
Key removable option is not available for any of Von Duprin aluminum mullions.
The 5654 and 5754 mullions have mullion edging that accepts weatherstripping. The weatherstripping is included with both mullions and is already attached to the mullion edging on new 5654 and 57...
The Von Duprin electrified steel mullions, 4854 and 9854 come with a quick connector that connects the electric strike wires from the mullion to the frame through the top fitting.  ...
Aluminum mullions 5654 or 5754 are not designed to accept any electric strike including 6300 surface mounted electric strike.
The KR4023 mullion requires a 1-1/4" mortise cylinder with straight cam. This is stated in box 7 on the first page of the KR4023 mullion instructions.
4754, 4854 and the 9854 are electrified mullions and handed as noted below: 4754 is not handed: Prepared for two 4263 monitor strikes. Use with all Von Duprin rim panic devices 4854 is han...