Most of the current locks require the standard 2 1 8 bore.
Door handle hole diameter.
If one wants to replace their locks on doors that have smaller diameter holes there are 2 options.
Lock bore the diameter of the hole for the lock body.
There are a few exceptions and we ll discuss those here in a bit but there are no.
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.
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.
Choose the mark that corresponds to the door width.
Measure from the center of the door knob hole to the edge of the doorway to find the size of the door set.
It works for 2 3 8 in.
The center of this hole should be located 2 3 8 inches or 2 3 4 inches back from the edge of the door.
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.
It features two bi metal hole saws and a height alignment window for accuracy.
A common request we get around our shop is for door knobs or levers made for the small 1 1 2 or 1 5 8 bore hole.
Bore a 2 1 8 inch hole through the door.
The standard bore is 2 1 8.
The latch will fit into the 1 inch hole.
The last thing you want to use is a jigsaw.
Fit into the door prep shown above.
Many older doors had bores that were been smaller.
Backsets and 1 3 8 in.
The dewalt door lock installation kit helps you install door locks on wood and metal doors.