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How to Repair Bifold Door Top Roller Guide If your bifold doors are squeaking, they probably require some maintenance. They could need to be cleaned or lubricated, or even adjusted. The issue could be caused by a loose bolt on the top pivot, or by the top guide roller. This kit comes with all the hardware needed to return your bi-fold closet door to its best performance. Remove the Door It may appear complicated and difficult to install an internal set of bifold doors but for DIYers with some experience it is act