Measure in three places and use the smallest dimension.
How do i measure a door lock.
Run a tape measure along your door from the left corner to right corner and record this number.
When boring deadbolt locks in a door there are two standards for spacing between the bottom lock and the deadbolt.
How to measure a multipoint door lock.
Pack your locks with a 2 3 8 inch or 2 3 4 inch latch depending on which backset you specify.
So to make it easy we ve pulled together the following easy to follow guide which will help you identify the model you currently have so that you are ready to order a.
Using the diagram on the left of a typical multipoint setup measure your lock as follows.
Before purchasing a lock measure your door s backset cross bore and thickness to ensure you find the right fit.
2 3 8 inches and 2 3 4 inches.
Confirm the door swing before ordering the new door see below.
Measure the height of the rough opening from the floor or rough sill to the bottom face of the header.
Do not include any other elements such as weather stripping.
A the pz centres.
Lock spacing the distance between two locks.
When replacing locks the latch backset needs to match the holes bored in the door.
How to measure your latch.
Measuring a multi point door lock is quite involved but with this guide should be relatively easy.
When buying a tubular mortice latch for your door handle it is important you know the correct size.
The distance between the edge of the door and the center of the lock hole.
It is important that you only measure the door.
How to measure a multipoint lock.
The two most common are 5 1 2 and 6 from the centers of the two holes.
Euro cylinder locks are now measured by the ts007 1 star 2 star or 3 star ratings the old british standard kite mark rating is no longer a real measure of true security in modern euro lock design in our opinion but all of the anti snap euro locks we sell have the bs kite mark it s such a basic level compared to the ts007 rating.
The backset is the distance from the edge of the door to the center of the 2 1 8 inch bore hole.
Measure the thickness of the wall measuring from the exposed faces of the drywall or sheathing on both sides of the wall.
Measure the width of the door.
In the united states there are two common backsets for residential door locks.