How to measure a cylinder

Choosing the right Garrison cylinder is vital for ensuring your locks are reliable, and secure your property correctly. It is important to make sure you choose the right type of cylinder, but it is equally important to get the right size cylinder. Security may be compromised if the wrong size cylinder lock is installed.]

If installing a Euro or Oval mortice cylinder these must not protrude further than 5mm. If you have handles or security rose you can allow 10mm.

If you are fitting Euro cylinders to a UPVC, Composite or similar made door it is always preferred that the handles are PAS24 rated. PAS24 handles offer maximum protection when fitted correctly along with the manufacturers fixings.

Learn to measure your cylinder locks with our simple guide to make sure you find the perfect replacement cylinder. Protect your property against lock snapping and burglars with the correct cylinder from Garrison Locks.