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UPVC Replacement Door Handles The handles on your doors are worn out with time and require to be replaced. In this case, it is crucial that the new handles conform to the dimensions of the previous handle. The top screw's location as well as the lever and keyhole sizes are the three measurements you have to determine. Use the size guide to assistance with this. Inline Lever/Lever A lever or lever door handle is a modern handle that can be installed on replacement or new doors. This type of h