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UPVC Replacement Door Handles The handles on your doors wear out with time and require to be replaced. It is essential to keep the same dimensions as the handles that were previously used when replacing them. The three measurements you need to examine are the top screw position as well as the key hole and lever dimensions. Use the size guide to aid you. Inline Lever/Lever A lever or lever door handle is a modern handle that can be put in on doors that are new or replace