Hardware only, not includes door panel;Hardware fit door leaf Width 20″(total 80″);Fit door thickness: 1-3/8″1-5/8″. Track length 84″(42″ track X2pcs), Max capacity 198lbs;Track pre-drilled 16″ apart holes, fit US standard 16″ apart studs walls. Full set hardware includes:42 track X2, Track&wall connector X5, Floor guideX2, HingeX6, Fixed rollerX2, Bifold rollerX2, Fixed roller lock bracketX2. The height from top of the door to the top of the roller is 5 7/8″;The gap between door and wall:Door closed:1″1 3/16″;Door opened:1/4″3/8. Noted:DO NOT mount rail onto drywall directly, make sure the screws can be fixed on studs/solid wall.