Standard Door Lock Backset

In the united states there are two common backsets for residential door locks.

Standard door lock backset.

4 5 out of 5 stars 95. Defender security u 9590 lock and door reinforcer stainless steel fits 1 3 4 doors 2 3 8 backset reinforce and repair wood or metal doors add extra security to your home help prevent forced entry. Get it as soon as tue jun 9. Standard backsets are either a 2 3 8 backset or 2 3 4 backset.

And you might find all three on a residential home or a 2 3 8 on a commercial building. If you dont have any hardware on your door just measure from the edge of the door to the center of the bore hole the large hole where the door knob assembly is mounted. 2 3 8 inches and 2 3 4 inches. Pack your locks with a 2 3 8 inch or 2 3 4 inch latch depending on which backset you specify.

The term backset is used to describe the location of a lock in relation to the edge of a door. While some lock locations are fairly standard they can vary based on hardware design manufacturer and region. The backset is the distance from the edge of the door to the center of the 2 1 8 inch bore hole. Defender security u 10676 door latch guard outswing 2 5 8 inch backset stainless steel.

The most common backset is 2 3 8 but 2 3 4 is also quite common usually used on exterior doors. This dimension is used for all types of locking devices including cylindrical and mortise locks as well as deadbolts and handle sets. As commercial hardware normally uses a 2 3 4 backset while residential uses 2 3 8 backset.