How to replace the lock in a UPVC door

Inside a uPVC door mechanism https://www.helplocks.com

What is an ANTI-SNAP LOCK?

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HS118 uPVC door sticking lock fix (Do it yourself)

HOW TO FIX A UPVC DOOR THAT WONT LOCK

You Can Add Door Springs to Most uPVC Door Handles!

UPVC Door Locking And Unlocking Problem || How To Fix UPVC Door Lock

Inside A Faulty UPVC Door Mechanism https://www.helplocks.com

Easy way to adjust a UPVC door

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DIY method to open stuck UPVC window lock and how to replace broken mechanism with Nico parts.