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How to Replace UPVC Window Handle The type of lock or handle you have is the first thing to consider when replacing a upvc window handle. In-line Espagnolette handles are a standard option and will fit in any UPVC window with an operating mechanism that is cranked (where handing applies). You can remove the spindle by opening the windows 90 degrees and rotating the pin or screw. Spindle To replace window handles made of upvc first, you need to ensure that the handle is compatible with the wi