In most cases the door set which is inside of the door and controls the door latch.
Door handle hole diameter.
Note that the template offers two possibilities for the barrel hole one for a 1 3 8 inch door and one for a 1 3 4 inch door.
The standard bore is 2 1 8.
There are a few exceptions and we ll discuss those here in a bit but there are no.
You need two different hole saws to create the perfectly round holes in the face of the door and the smaller hole in the edge of the door.
This is the backset dimension bore a 1 inch hole in the edge of the door located on the centerline of the 2 1 8 inch hole.
Backsets and 1 3 8 in.
The latch will fit into the 1 inch hole.
It features two bi metal hole saws and a height alignment window for accuracy.
Most of the current locks require the standard 2 1 8 bore.
It works for 2 3 8 in.
The last thing you want to use is a jigsaw.
Measure from the center of the door knob hole to the edge of the doorway to find the size of the door set.
Choose the mark that corresponds to the door width.
Fit into the door prep shown above.
If one wants to replace their locks on doors that have smaller diameter holes there are 2 options.
Bore a 2 1 8 inch hole through the door.
Lock bore the diameter of the hole for the lock body.
Tape the template to the door and mark the centers of the lockset and barrel hole by making an indentation with the tip of a spade bit.
The hole diameters are 2 and 1 8 inch and 1 inch respectively.
Actually while there are deadbolts available that are made specifically for the smaller bore today s knob and lever sets are for the most part made to fit the standard 2 1 8 door preparation.
The center of this hole should be located 2 3 8 inches or 2 3 4 inches back from the edge of the door.