CCJH 4FT-16FT Stailnless Steel Sliding Barn Door Hardware Top T Mount Hanger Kit. For Single Door/Double Door. HARDWARE ONLY, DOOR IS NOT INCLUDE. All of our products comply with strict quality control and advanced technology makes CCJH Sliding Barn Door Hardware more reliable. 01The aviation aluminum track with Environment friendly decorative chrome plating, wall thickness is up to 2mm, the track adopts mechanical design, add keel support in the middle, through strict test can strongly support weight. 02Add anti-falling wheel on the roller, can effectively prevent the roller hanger from falling off during sliding. 03Slotted design at the back of the track, The fixed seat position can be adjusted according to the installation requirements. 04The head of the door stopper is nylon arc, Perfect fit with roller pulley radian, reducing noise. (1)Rollers: 2pcs (2)Splice Track (3)Door Stops: 2pcs (4)Wall Hangers (5)Rail Screws (6)Floor Guide/wrench: 1pc (7)Anti-jump Disk: 2pcs (9) Installation manual: 1pc. (1)Rollers: 4pcs (2)Splice Track (3)Door Stops: 4pcs (4)Wall Hangers (5)Rail Screws (6)Floor Guide/wrench: 2pcs (7)Anti-jump Disk: 4pcs (9) Installation manual: 1pc. HOW TO CHOOSE TRACK SIZE. 1 Single Door Min Track Size= 2 × Single Door panel Width (Like you door width is 3FT, you need to choose 6FT length Kit). 2 Double Door Min Track Size= 4 × Single Door panel Width. (Like you door width is 3FT, you need to choose 12FT length Kit). Any questions please tell us, Our customer service will help you within 24 hours.