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Choosing a Replacement Upvc Door Handle When you are choosing a replacement for your handle made of upvc, check that it matches both your existing door's screw fix centre and the PZ measurement. They are typically on the backplate. Most handles come with spring cassettes that help keep the lever of the handle in the horizontal position. If your handles made of upvc seem loose when they are opened, this could be because the spring is deteriorating. Inline Lever/Lever The inline lever/lever is a contemporary