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How to Repair Bifold Door Top Roller Guide If your bifold door is squeaking then it's likely that they require some maintenance. They could need to be cleaned, lubricated or adjusted. The problem could be caused by a loose bolt at the top pivot or by the top guide roller. This kit includes all the hardware needed to bring your bi-fold closet door to optimal performance. Remove the Door Installing a set of internal bifold doors may seem like a complex and complicated project howeve