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Replacement Handles For UPVC Windows uPVC handles can loosen or break off. Fortunately, replacing them is a simple job with the appropriate tools. Look for the screws or pins that hold it in place to determine the type of handle. Once you've found them, remove the screws or pins and carefully take the handle off of its spindle. Espag Handle Espag handles are commonly found on double-glazed uPVC Windows. They are flat and cylindrical in shape. They're typical