Measure a Door Cylinder (video)
How to Measure Your uPVC Door Cylinder
This guide shows you how to remove and measure a euro cylinder from your uPVC or composite door, including inside and outside measurements and how to avoid ordering the wrong size.
What we cover
- Safely removing the cylinder from the lock
- Measuring from the fixing screw to each end
- Understanding internal vs external size
- Choosing anti-snap and high security options
Browse our High security door cylinders and read the full written guide: How to measure your euro cylinder.