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UPVC Replacement Door Handles The handles on your doors get worn out over time and will need to be replaced. When doing this it is crucial that the new handles conform to the exact dimensions of the handle that was previously used. The top screw position as well as the lever and keyhole sizes are the three measurements you have to verify. Use the size guide to help you. Inline Lever/Lever A lever/lever handle is a modern door handle that is designed to fit new or replacement doors. This type of