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Choosing a Replacement Upvc Door Handle Choosing the correct replacement upvc door handle involves making sure that it matches the measurement of your current door's PZ and screw fix centres. These are typically located on the backplate of the handle. The majority of handles have spring cassettes that assist in keeping the lever in a horizontal position. If your upvc handle seems flabby, it could mean that the spring has deteriorated. Inline Lever/Lever The lever/inline is a contempo