How To Measure Your Euro Cylinder Lock

Euro cylinder door locks are the most common lock type in Britain today. They are versatile and most brands will fit any kind of uPVC door, as well as composite, aluminium and patio doors. They can be fitted to your front and back doors and offer resistance to drilling, picking, bumping etc.

Security brands such as Yale and Avocet supply three star euro cylinders that really are the gold standard of door locks. When measuring and fitting your euro cylinder lock, it’s not just about getting the dimensions right — it’s also about ensuring proper security placement. According to guidance from West Yorkshire Police, a cylinder that protrudes beyond the handle can make your door more vulnerable to snapping attacks, one of the most common methods used by intruders. They recommend fitting locks that sit flush with the handle and choosing models tested to British Standard TS 007 for enhanced protection. You can read their full advice on safe installation and security best practices here: West Yorkshire Police – Euro Cylinder Advice

Euro Cylinder Diagram

Diagram of a euro cylinder lock showing how to measure its size: first measurement from the edge to the screw center, and second measurement from the screw center to the opposite edge.

See our ‘How To Measure Your Euro Cylinder Lock’ diagram

  • The first measurement should be taken from the edge of the cylinder to the centre of the screw.
  • The second measurement should be taken from the centre of the screw to the other edge of the cylinder

Take a closer look below at our easy to fit Euro Cylinder Lock:

📚 Featured Collections in this Article

Euro Cylinder Locks – Key, Thumbturn & High Security
A complete range of euro cylinders for uPVC, timber & composite doors—key-both-sides, thumbturn & half cylinder styles in various sizes & finishes.

A diagram showing the Yale Euro Cylinder Door Lock with keys in hand, including a visual representation of the lock's scale and keyhole.

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