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How to Replace a Replacement Upvc Door Lock Mechanism Having a replacement upvc door lock mechanism can be a great method to improve the security of your home. But, it is essential to identify the type of uPVC lock you are using so that you can find a suitable replacement. Broken hinges or excessive pressure can cause uPVC mechanisms to stick. Lubricating the hinges is an easy fix. Identifying the Manufacturer The first step to replace your uPVC door lock mechanism is to identify the manufacturer. This c