https://botdb.win/wiki/12_Stat....s_About_Bi_Fold_Door
How to Repair Bifold Door Bottom Pivots Misalignment is likely to be the cause of your bifold doors sagging and scraping the floor. A few minor adjustments can bring them back in line. This pivot's bottom mounts to the floor or the base of a bracket for a sturdy, secure mounting. This kit is threaded for adjustment and is compatible with many bi-fold door designs. Cracked or Broken Anchor or Pivot Pins The pivot pins and anchor pins on a bifold door can break