[Durability and Weight Capacity]: Solid steel roller hanger and High strength industrial grade flat tracks hold MAX. 330 lbs door, durable for long life, excellent moistureproof and rust-resistant. [Quiet and Smooth Operation]: Super silently nylon wheels which ensures rollers slide smoothly and quietly on the track, makes the door fully cushioned when closed to protect door and keep safety. [Save Space for Small Space]: For space-saving benefit, ccjh folding door hardware kit is great option for both homes, offices, narrow hallways and as well as smaller apartments, blending modern design with rustic appearance. [Easy to Install]: CCJH barn door hardware offers professional instruction and customer service to solve all installation problems in time, needs MIN. 6″ space above the door, fits from 1-3/8″ to 1-3/4 thick door. Well Complete Package: Bi-folding door kit-NO DOORSplicing 36 track, 2x J-shape rollers, rotating shaft, hinges, all hardware needed for folding door kit are included. Note:Rail Size > door opening width +6. CCJH 30″ – 96″ Bi-Folding Sliding Barn Door Hardware Kit for 2 Doors, Slide Smoothly Quietly, Black Track J Shape Roller [No Door Included]. 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. We Only Sell Folding Door Kit, Not Sell Door Panel. Rail Size > The Width of Door Opening + 6. Can Support Maximum weight 330 lbs. Fit Door Thickness from 1-3/8″ to 1-3/4″. Need at Least 6 Space Above the Top of the Door. The Gap Between Door and Wall is 2.16 Minus Your Door Thickness. First Choice for Small Space – Save Space. Heavy Duty Construction – Solid Steel. Widely Application – Bedroom, Living Room, Wardrobe, Cabinet etc. Stable and Durable – Anti-corrosion and Rust-resistant. Sliding Smoothly and Quietly – Super Silently Nylon Wheels. Folding Two Doors / Four Doors Comparison.