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How to Replace UPVC Window Handle The type of handle or lock you own is the first thing to think about when replacing a upvc window handle. The handle that is in-line with Espagnolette is a standard option that can be fitted to any UPVC window that is equipped with a crank system (where handling is required). They contain a small screw or pin holding the spindle which you can take off by opening the window and twisting 90 degrees. Spindle To replace upvc window handles first, make sure that