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How to measure a Door Cylinder

Cylinders are available in 5 main variants:

Always keep an eye out for the below features too. Heres a handy guide to what they all mean:




The diagrams below show how you should measure for a door cylinder. Our aim is to make it as easy for customers as possible but should you require extra information please give us a call direct on 0845 830 0832 and speak to one of our expert technicians. 



                                    Double Cylinder                                                     Single Cylinder


For Thumbturn cylinders please use the above measurement guide as it is. The thumbturn itself is not included in the measurements.

Please Note: For ABS Cylinders, TSS Cylinders, VERSA Cylinders and Carl F Cylinders the above is reversed as per the image below.

If you are having any difficulty working out the correct mesaurements for your cylinder please give us a call on 0845 830 0832.


            Double Cylinder (ABS, TSS, VERSA and Carl F brands only)



Once you have determined the length you need you are now ready to choose an anti-snap cylinder from our range. Here at Lock Shop Direct we only stock leading brands and if you need a double cylinder we recommend either Yale or ABS locks

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