Other Dimensions:

Diameter of the Large Bore Hole for the Spindle (aka "tail piece"):       1/2″ to 2-1/8″
Distance From an Existing Deadbolt Above:

To install this lock underneath an existing deadbolt, allow at least 4-1/8" from the bottom of the existing deadbolt to the middle of the large hole for this lock.


Distance From an Existing Deadbolt Below:

To install this lock above an existing deadbolt, allow at least 1-5/8" from the top of the existing deadbolt to the middle of the large hole for this lock