The Von Duprin CD kit comes with the cover plate machined to accept the cylinder dogging mortise cylinder.1 1/4" mortise cylinder with an inverted straight cam is required for CD option on Von Dupr...
20-059 is the standard straight cam FSIC housing only used with Von Duprin, Monarch, and other straight cam applications.
30-032 is the straight cam FSIC housing only for the outside of the Schl...
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.