Item: 4-16FT sliding barn door hardware. (Hardware only, door is not included). Color: Frosted Black. Maximum Door Weight Capacity: 250lbs. Door Thickness: From 1.57″ To 1.77″ (40mm-45mm). The top of the Doors to the ceiling : Min distance is 6.7 (17cm). Suitable for the bedroom, study room, living room, kitchen etc. HOW TO CHOOSE TRACK SIZE. 1 Single Door Min Track Size= 2 × Single Door panel Width (EX: If your door panel width is 3ft, Min track size is 6ft). 2 Double Door Min Track Size= 4 × Single Door panel Width (EX: If your single door panel width is 3ft, Min track size is 12ft). 3 Bypass 2 Doors. 2 doors just slide on the opening space, and cannot be put away to the near wall, Track size= 2 × Single Door panel Width. 2 doors overlapped onto each other can be slid to the one side wall, Track Size= 3 × Single Door panel Width. 2 doors can be slid on the either sides wall, Track size= 4 × Single Door panel Width. 4 Bypass 4 Doors. 2 doors just slide on the opening space, and cannot be put away to the near wall, Track size= 4 × Single Door panel Width. 2 doors slid to the both sides near walls, Track size= 6 × Single Door panel Width. Door Stops: 2pcs. Anti-jump Disk: 2pcs. Floor Guide/wrench: 1pc. Installation manual: 1pc. Door Stops: 4pcs. Anti-jump Disk: 4pcs. Floor Guide: 2pcs. For Bypass 2 Doors. For Bypass 4 Doors. Door Stops: 8pcs. Anti-jump Disk: 8pcs. Floor Guide: 4pcs. We accept items return within 30 days from the date you receive the package.