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Choosing a Replacement Upvc Door Handle When selecting the right replacement upvc handle, you should ensure that it is in line with the screw fix centre and PZ measurement. These are typically located on the backplate of your handle. The majority of handles have spring cassettes that aid in keeping the handle lever in a horizontal position. If your upvc handle seems flabby, it could mean that the spring has deteriorated. Inline Lever/Lever The inline lever/lever is a contemporary handle design that perfectly