installation instructions for removable mullion

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Answer
To remove the Schlage L Series from a door reference the appropriate installation instructions found here at https://us.allegion.com/en/home.html
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.  ...