Minimum stile requirement for AD/CO exit trim?

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- AD Series and CO series products require that the Night Latch (NL) screw is installed in the exit device.  Be sure this screw is installed- Exit hardware and strike must be properly mounted ...
The part number for the AD or CO twisted tailpiece kit is: 46929303 Tailpiece Kit - (for Exterior Escutcheon -993 into Exit Device, i.e. Von Duprin 98 or 99) Exit Trim 46929303 Includes the...
The minimum recommended Stile measurement is 5” to allow proper mounting of the AD and CO series locks.