How to Replace Bifold Doors Many home improvement stores sell bifold doors as kits that include the door panels, track for installation and the hardware. The doors should be about 1 inch smaller than the frame opening. If your bifold closet doors sag open it could be due to a https://bi-folding-door-repair52775.alltdesign.com/an-easy-to-follow-guide-to-bi-fold-repairs-50356954