How to measure a window lock
Espag window locks are relatively easy to identify and install. The instructions below should help you through
the process of measuring your current lock to establish the direct replacement that you require.
Note the position of the lockcase relative to the faceplate
In the first instance you should note the position the lockcase relative to the faceplate - inline or offset.
The top example shows an offset lockcase - it is positioned on one side of the faceplate.
An inline lockcase (as per the image on the bottom) sits centrally on the faceplate.
Identify the rail shape
Looking at the rail end-on, identify the rail shape (see Fig. 1).
The top image is a flat rail; the bottom image shows a u rail.
Take the measurements
See Our Products
Our generous stock inventory means that we can supply those much-needed spare parts on same day dispatch: enabling you to get on with the job as quickly as possible.
Send Us A Photo
From one-off purchases through to trade accounts we are here to help. If there is anything you are not sure of please contact us: if you're searching for a specific part, why not send us a photo – we can often help to identify the required part that way; giving you extra peace of mind.
Send Your Photo To
07734 955 325
or fill in the form: