Residential single and multi family doors.
Standard residential door backset.
A backset is the distance from the center of the cross bore to the edge of the door.
Universal latch standard fits either 2 3 8 60mm or 2 3 4 70mm backsets.
2 3 8 2 3 4 or 5 backset.
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The two standard backset measurements in north america are 2 3 8 inches and 2 3 4 inches.
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.
Standard backsets are either a 2 3 8 backset or 2 3 4 backset.
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.
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.
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.
So typically at least around here 2 3 4 for exterior 2 3 8 for interior for cylindrical locksets.
And you might find all three on a residential home or a 2 3 8 on a commercial building.
Gatehouse hall closet door knobs fits most standard residential doors 2 3 8 in.
The most common backset is 2 3 8 but 2 3 4 is also quite common usually used on exterior doors.
In the united states there are two common backsets for residential door locks.
For residential 2 3 4 backset was used on rabbeted jambs to keep from hitting your knuckles.
Other backsets include 2 used by national and lori lock and 5 used by weiser weslock kwikset and others.
The backset is the distance from the edge of the door to the center of the 2 1 8 inch bore hole.
Opening heights 3 0 through 4 11 15 16 centered in door height not frame.
Sometimes it s easier to measure from the edge of the door to the highest point on the bore hole.
Available from these sellers.
Backset and standard door thickness of 1 3 8 in to 1 3 4 in item 117984 brand.
2 3 8 inches and 2 3 4 inches.
Most commercial doors have a backset of 2 3 4 inches 69 8 mm while residential doors measure 2 3 8 inches 60 3 mm.
Two standard backsets are 2 3 8 and 2 3 4.
5 127mm backset available.
In the us and canada two standard dimensions are used.
Rabbeted jambs were usually used on exterior doors.
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