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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. These will usually be found on the backplate of the handle. Most handles come with spring cassettes that assist in keeping the lever of the handle in a horizontal position. If your upvc handle is loose, it could be that the spring has degraded. Inline Lever/Lever The inline lever/lever is a contemporary handle design that perfectly matches wi