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UPVC Replacement Door Handles The handles on your doors wear out with time and require to be replaced. When replacing them, it is essential that the new handles conform to the exact dimensions of the handle that was previously used. The three measurements to be inspected are the top screw position the lever and key hole dimensions. Refer to the size guide for assistance in this. Inline Lever/Lever A lever/lever handle is a modern door handle designed to work wi