NOTE: Door and Install Tools are not included in package. Top Mount Roller Bifold Sliding Barn Door Hardware Kit Black Flat Track Modern. 3ft/36″ Rail for 2 doors kit fit less 17″ wide door, use three bifold hinges to connect two 17 doors. 2.5ft/30″ Rail for 2 doors kit less 14″ wide door. 3ft/36″ Rail for 2 doors kit less 17″ wide door. 3.3ft/40″ Rail for 2 doors kit less 19″ wide door. 3.5ft/42″ Rail for 2 doors kit less 20″ wide door. 4ft/48″ Rail for 2 doors kit less 23″ wide door. 4.3ft/52″ Rail for 2 doors kit less 25″ wide door. 5ft/60″ Rail for 2 doors kit less 29″ wide door. 5.5ft/68″ Rail for 2 doors kit less 32″ wide door. 6ft/72″ Rail for 2 doors kit less 35″ wide door. 6.6ft/80″ Rail for 2 doors kit less 39″ wide door. 8ft/96″ Rail for 2 doors kit less 47″ wide door. 4ft/48″ Rail for 4 doors kit fit less 11.5″ wide door, use six bifold hinges to connect four 11.5 doors. 4ft/48″ Rail for 4 doors kit less 11.5″ wide door. 4.3ft/52″ Rail for 4 doors kit less 12.5″ wide door. 5ft/60″ Rail for 4 doors kit less 14.5″ wide door. 5.5ft/68″ Rail for 4 doors kit less 16″ wide door. 6ft/72″ Rail for 4 doors kit less 17.5″ wide door. 6.6ft/80″ Rail for 4 doors kit less 19″ wide door. 7ft/84″ Rail for 4 doors kit less 20.5″ wide door. 7.5ft/88″ Rail for 4 doors kit less 21.5″ wide door. 8ft/96″ Rail for 4 doors kit less 23.5″ wide door.