Other Dimensions:

Diameter of the Large Bore Hole (for the Spindle):
Diameter of opening for the flat spindle (aka "tail piece") 1″ to 2-1/8″

Distance From an Existing Deadbolt:
If you are going to install this lock underneath an existing deadbolt, you will need at least 2-3/4 inches from the bottom of the deadbolt down to the top of the large hole for this lock. Call for details.
If you are going to install this lock above an existing deadbolt, you will need at least 2-3/4 inches from the bottom of the deadbolt down to the top of the large hole for this lock. Call for details.