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How to Replace Bifold Doors Many home improvement stores sell bifold doors in kits that include doors, the track for installation and the hardware. The kits you purchase should have a total dimensions that are about one inch less than the width of the framed opening. If your bifold doors squeak open, it could be because of a a loose guide pin on the top track or if the rotating floor pin at the bottom is out of place or not there. These problems can be fixed easily and cos