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UPVC Replacement Door Handles The handles on your doors wear out over time and need to be replaced. It is crucial to keep the same dimensions as the handles that were previously used when replacing them. The top screw position, the lever and the keyhole dimensions are the three measurements you need to determine. Use the size guide to assist you. Inline Lever/Lever A lever handle is a modern door handle designed to work with new or replacement doors. This type of handle is available in many styles and finish