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Choosing a Replacement Upvc Door Handle Selecting the right replacement handle for your door is making sure it is in line with your existing doors PZ measurement and screw fix centres. They are typically on the backplate. The majority of handles have spring cassettes that assist in keeping the handle lever in an upright position. If your handles made of upvc seem loose when they are opened, this could be because the spring is degrading. Inline Lever/Lever The lever/inline has a modern design that perfectly f