Please see below a quick guide to assist in measuring and identifying the right replacement cylinder.
There are many types of cylinder on the market, they all perform in the same way, inserting the correct key allows you to turn the key which turns a cam which in turns operates the mechanism. Ensuring that your cylinder is the correct size will make the installation more secure and aesthetically pleasing once fitted.
Double cylinders are operated by a key from either end, the are available in both Euro and Oval profiles
Key & turn cylinders are operated by a key from the outside of the door and a thumbturn from the inside, allowing you to lock and unlock the door without a key from the inside; they are available in both Euro and Oval profiles
Half cylinders are only operated from one side, the are available in both Euro and Oval profiles
Now you know what measurements you need please browse our range of cylinders and find the right one for your application.