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Choosing a Replacement Upvc Door Handle When selecting the right replacement handle made of upvc, check that it matches both the screw fix centre and the PZ measurement. They are typically located on the backplate. Most handles have spring cassettes that aid in keeping the lever in the horizontal position. If your upvc handle is floppy, it could be that the spring has become damaged. Inline Lever/Lever The lever/inline is a contemp