Keyed removable mullion options

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Question
Answer
Key removable option is not available for any of Von Duprin aluminum mullions.
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...
The Von Duprin 4754, 4854, 9954, and 9854 mullions can be converted or ordered with key removable option. KR54-F kit is the conversion kit to convert the above mullions to key removable mullion.
Von Duprin KR (key removable) mullions requires a 1-1/8" or 1-1/4" mortise cylinder with the standard straight cam, the cam is not inverted. Please see chart below for part numbers. 
instructions
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.  ...
TSF, closed section; Hardware Mullion
KR
Closed Section, Mullion, Removable Transom Bar
All 3 hour fire rated pairs of doors do require an astragal when used without a removable hardware mullion. Pairs of doors with removable hardware mullions are treated and listed as 2 single doors...