Please review all pictures - If your lock body looks like the pictures you have an old style - Obsolete. Must be replaced with new style lock body or complete replacement.
NOTE: If Replacing an old style Roto with new style Roto; the Gear Box is 23/32 inches different. It will be necessary to lower the Strike Plate about 3/4 inch to match with the new latch and deadbolt; and the door will need to be notched about 3/4 inch to accommodate the new Multipoint lock body. Remember to measure the backset either 1-3/8 (35mm) or 1-3/4 inch (45mm) when ordering.