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Choosing a Replacement Upvc Door Handle When you are choosing a replacement for your handle made of upvc, make sure it matches the screw fix centre and the PZ measurement. These are usually located on the backplate. The majority of handles have spring cassettes that assist in keeping the lever of the handle in the horizontal position. If your handles from upvc are floppy when open this could be due to the fact that the spring is degrading. Inline Lever/Lever The lever/inline is a modern handle design that is