The backset is the distance between the edge of the door to the center of the main hole. The main hole is usually a round 2 1/8" diameter that the body of the lock fits through. The distance is usually 2 3/8" or 2 3/4". Today, most commercial and industrial doors are set for 2 3/4". The trend has been for more private homes set this way also. These are the two most common backsets. When measuring the backset make sure to do it carefully. The difference is small and it's easy to make a mistake especially if your measuring with the lock still on the door. You may have noticed that on cheaper lock hardware the backset often is variable. But this is not the case with the better quality heavy duty locksets. (I wish I knew why!) See backset diagram | See great tool for changing backset hole
The distance from the edge of a door (or the forend) to the centre of the keyhole or cylinder.
The distance from the edge of the door to the center of the drilled knob or deadbolt hole. 2-3/8" is the most common backset; 2-3/4" is the second most common backset.
this term is used to explain the distance from the edge of the door to the center of the hole drilled for the knob, lever or deadbolt.
The distance from the edge of the door to the center of the hole drilled for your entry set knob, lever or deadbolt.
The measurement between the edge of the door to the center of the hole drilled for the lock.
The distance from the middle of the handle or knob to the edge of the door - 2-3/8" backset installed in a 2 1/2 " hole is the most common size.
(n.) The distance between the center of a cross bore and the bolt edge of a door or drawer. Source: Lock Industry Standards and Training (LIST) Council
The distance from the edge of the door to the center line of the prep in the door. In the U.S. there are two common backsets for residential door locks, 2-3/8" and 2-3/4". Dummy sets have no latch and are surface mounted so you can install a dummy set wherever you choose on the door.
The horizontal distance from the face of the lock to the centerline of knob hub keyhole or cylinder. (Measured from the high side of a beveled door.)
The horizontal measurement from the edge of the door to the center point of the 2-1/8" holes through the door.
Distance from the face plate of the lock to the center of the lock cylinder.
An important measurement when choosing door knob and lever sets, the backset is the distance from the center of the knob hole to the edge of the door. A 2-3/8" backset is standard for interior residential doors; 23/4" is another common measurement.
A measure of the horizontal distance from a lock face to the center of the keyhole or cylinder. Measured from the center of the lock edge for a beveled front, and from the lower step of the lock face for a rabbeted front.
The term backset is used to explain the distance from the edge of the door to the centre of the hole drilled for your knob, lever or deadbolt.
The distance from the edge of the door to the center of the hardware hole. Two standard Backsets are 2-3/8 and 2-3/4 other backsets are available.
In the U.S. there are two common backsets for residential locks, 2-3/8" and 2-3/4". The backset is the distance from the edge of the door to the center of the 2-1/8" bore hole. We will pack your locks with a 2-3/8" or 2-3/4" latch depending on which backset you specify. Dummy sets have no latch and are surface mounted so you can install a dummy set wherever you choose on the door. [View Backset Diagram] [Category: Door Terminology
The horizontal distance from the edge of the door to the center line of knob keyhole or cylinder.
the distance from the door edge to the centre of the keyhole or handle.
For locating a machined hole, recess, or mortise, the distance from an edge or surface to the center or edge of the recess, hole or mortise.