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How to Repair Bifold Door Top Roller Guide If your bifold door is squeaking then it's likely that they need some attention. You may need to clean or lubricate them, or even adjust them. The problem may be caused by an unfastened screw on the top pivot or the top guide roller. This kit contains all the hardware needed to restore your bi-fold closet door to its best performance. Take the door off Installing an internal set of bifold doors may seem like a complex and difficult task, but it's actually quite simp