Door thickness standard doors are 1 3 8 1 3 4 thick.
What does backset mean for door hardware.
If you intend to use new locks or latches on an old door replacing your old ones you will need to make sure the new one fits into the hole in the door.
Backset is the distance from the front of the lock to the centre of the spindle as shown here.
Standard backsets are either a 2 3 8 backset or 2 3 4 backset.
The horizontal distance measured from the edge of the door to the center point of the bore hole.
The metal rod on which knobs and levers are mounted.
The backset of a door is the distance in inches from the edge of the door to the center of the bore hole.
The door prep image seen to the left applies to any standard tubular lock or latch set including interior door knobs door levers deadbolts entry door handle set and door handle plates.
If you don t have any hardware on your door just measure from the edge of the door to the centre of the bore hole the large hole where the door knob assembly is mounted.
In the united states there are two common backsets for residential door locks.
2 3 8 inches and 2 3 4 inches.
You need to know the spindle s width and thread count to make sure new hardware is compatible with it.
Some door hardware comes with an adjustable backset some you have to specify what you need.
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.
To do this measure the backset distance of your old lock.
For example a right hand door is hinged on the right and swings to the right.
You can see the bore hole that is 2 1 8 in diameter.
The device on a door that catches the door frame to shut the door securely.
Backset the measurement from the bore hole to the edge of the door.
If your doors are different than this please contact us for help.
To add to this there are also 57mm and 44 46mm backset locks found on many short body locks however they are generally still referred to as 60mm and 45mm backset locks.
Other door hardware terms.
Bore hole and cross bore standard door prep is 2 1 8 bore hole with 1 cross bore.
To identify a door s handedness stand outside and note which side the hinges are attached to.
