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Choosing a Replacement Upvc Door Handle When choosing the correct replacement handle made of upvc, check that it matches both your existing door's screw fix centre and the PZ measurement. They are typically located on the backplate. The majority of handles have spring cassettes that help keep the lever of the handle in an upright position. If your handle is loose, it could be that the spring has become damaged. Inline Lever/Lever The lever/inline has a modern design that is perfect for the Fab and Fix portfo