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How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking, they probably require a little attention. They could require cleaning, lubricated or adjusted. The issue could be caused by a loose bolt on the top pivot, or by the top guide roller. This kit includes all the hardware you need to restore your bi-fold wardrobe door system to its peak performance. Remove the Door Installing a set of internal bifold doors might seem like an involved and complicated task however, it's actually