CCJH 3FT-12FT Bifold Sliding Barn Door Hardware Black Flat Track Kit 2/4Doors
3ft/36" Rail for 2 doors kit fit less 17" wide door, use three bifold hinges to connect two 17" doors. 4ft/48" Rail for 4 doors kit fit less 11.5" wide door, use six bifold hinges to connect four 11.5" doors.