UPVC Door Lock Measuring Guide
When trying to identify any multi-point lock, there are 2 main criticial dimensions required (always measured in millImetres).
What are the 2 critical dimensions?
1. The PZ dimension - measured from the centre of the spindle (follower) hole to the centre of the euro cylinder hole.
2. The ‘Back Set’ dimension - Measured from the front of the lock face plate to the centre of the spindle (follower) hole.