Ruler measurements can be tricky to figure out when you think you have a 2 1 4 latch based on how it lines up.
Standard residential door backset.
2 3 8 inches and 2 3 4 inches.
Backset and standard door thickness of 1 3 8 in to 1 3 4 in item 117984 brand.
So typically at least around here 2 3 4 for exterior 2 3 8 for interior for cylindrical locksets.
There are also extensions for some brands like schlage that can extend the latch enough to have the lock located in the center of the door.
However in our area you actually have three choices.
And you might find all three on a residential home or a 2 3 8 on a commercial building.
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Residential single and multi family doors.
Other backsets include 2 used by national and lori lock and 5 used by weiser weslock kwikset and others.
Two standard backsets are 2 3 8 and 2 3 4.
More to consider from our brands.
The two standard backset measurements in north america are 2 3 8 inches and 2 3 4 inches.
The backset is the distance from the edge of the door to the center of the 2 1 8 inch bore hole.
Universal latch standard fits either 2 3 8 60mm or 2 3 4 70mm backsets.
In the us and canada two standard dimensions are used.
2 3 8 2 3 4 or 5 backset.
Standard backsets are either a 2 3 8 backset or 2 3 4 backset.
Available from these sellers.
All standard bored locks ansi 115 2 161 61l type for mortise lock ansi 115 1 86 type all locations must be altered 3 8 lower and standard strike asa type.
In the united states there are two common backsets for residential door locks.
Rabbeted jambs were usually used on exterior doors.
To determine the correct backset measurement for your door you need to measure the distance from the edge of the door to the center of your cross bore.
Commercial standard certification ansi bhma a156 2 2011 grade 2.
In the uk and much of europe these dimensions can vary from 25 to 60 mm and many medallion knobs are placed in the center of the door creating a very large backset.
Sometimes it s easier to measure from the edge of the door to the highest point on the bore hole.
The most common backset is 2 3 8 but 2 3 4 is also quite common usually used on exterior doors.
Gatehouse hall closet door knobs fits most standard residential doors 2 3 8 in.
Opening heights 3 0 through 4 11 15 16 centered in door height not frame.
A backset is the distance from the center of the cross bore to the edge of the door.
