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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. You may have to clean and lubricate them or adjust them. The problem could be caused by an unfastened 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 optimal performance. Take the door off It may seem complicated and challenging to put in an internal set of bifold doors but for tho