Many older doors had bores that were been smaller.
Door handle hole diameter.
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.
Choose the mark that corresponds to the door width.
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.
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.
If one wants to replace their locks on doors that have smaller diameter holes there are 2 options.
Fit into the door prep shown above.
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.
The latch will fit into the 1 inch hole.
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.
It features two bi metal hole saws and a height alignment window for accuracy.
Lock bore the diameter of the hole for the lock body.
The dewalt door lock installation kit helps you install door locks on wood and metal doors.
The center of this hole should be located 2 3 8 inches or 2 3 4 inches back from the edge of the door.
It works for 2 3 8 in.
Backsets and 1 3 8 in.
Most of the current locks require the standard 2 1 8 bore.
The hole diameters are 2 and 1 8 inch and 1 inch respectively.
There are a few exceptions and we ll discuss those here in a bit but there are no.
Bore a 2 1 8 inch hole through the door.
The standard bore is 2 1 8.