BIG WHEEL HARDWARE KIT. SINGLE DOOR HARDWARE KIT. DOUBLE DOOR HARDWARE KIT. BYPASS DOUBLE DOOR KIT. All of our products comply with strict quality control and advanced technology makes CCJH Sliding Barn Door Hardware more reliable. Material: Carbon Steel Door weight capacity: 220lbs Sliding Length: 4ft-16ft for your choose The top of the Doors to the ceiling : Min distance is 6.7″ Suitable Door Panel Thickness: 1 1/4″ to 1 7/8 inch. 1Adjustable Roller hanger screws(from 3cm to 5cm), You can adjust the screw to the most suitable thickness for your door 2Rubber accessoriers & Spring door stops, has buffering effect when sliding door, reduce noise. 1 2 x Rollers 2 Wall Hanger Set (1 rail hole need 1 set) 3 2 x Door Stops 4 4 x Adjustable roller screws 5 2 x anti-jump blocks 6 1 x floor guide 7 Pre-Drilled Spliced rails Note: Only the sliding door kit for sale, door is not include. 1 4 x Rollers 2 Wall Hanger Set (1 rail hole need 1 set) 3 4 x Door Stops 4 8 x Adjustable roller screws 5 4 x anti-jump blocks 6 2 x floor guide 7 Pre-Drilled Spliced rails. Note: Only the sliding door kit for sale, door is not include. For Bypass 2 Doors. 1 Pre-Drilled Spliced rails 2 2 x Rollers 3 Wall Hanger Set (1 rail hole need 1 set) 4 2 x Door Stops 5 4 x Adjustable roller screws 6 2 x anti-jump blocks 7 1 x floor guide. 8 Bypass brackets (1 rail hole need 1 set) Note: Only the sliding door kit for sale, door is not include For Bypass 4 Doors. 2 8 x Rollers. 3 Wall Hanger Set (1 rail hole need 1 set). 6 4 x anti-jump blocks. 7 4 x floor guide. Bypass brackets (1 rail hole need 1 set). How to choose the track size? 1 Single Door Min Track Size= 2 × Single Door panel Width. Double Door Min Track Size= 4 × Single Door panel Width. 2 doors just slide on the opening space, and cannot be put away to the near wall, Track size= 2 × Single Door Width. 2 doors overlapped onto each other can be slid to the one side wall, Track Size= 3 × Single Door Width. 2 doors can be slid on the either sides wall, Track size= 4 × Single Door panel Width. Any questions please tell us, Our customer service will help you within 24 hours.