LTIYITL 3.3FT Bi-Folding Sliding Barn Door Hardware, Smoothly and Quietly-Heav.. [3.3FT for 2 Doors]. 17.48 x 5.59 x 3.7 inches. [EXCELLENT QUALITY]: Bi-folding door kit is made of high quality carbon steel with a matt black finish, ensuring the product is corrosion, water, fire, rust-resistant, durable, and maintains its beauty and longevity for many years. [PRODUCT DETAILS]:3.3FT/40″track, Each door panel should be half the size of the door opening + 50mm (1.97″) and the track should be more than 150 mm (6″) wider than the door opening, thickness: 1.18”-1.58”, leave 6″ from the upper edge of the door to the roof. [PACKAGE INCLUED]: splicing track, 2 J-type pulleys, 1 rotating shaft, 2 anti-jumping discs, 2 door stops, 1 floor rail, all hardware needed for hanging door. Note that there is only hardware, [DOOR NOT INCLUDED]. [QUIET AND STABLE]: The roller part is made of high-quality nylon material, which ensures that the roller slides like butter on the track. There are high-quality spring limiters on both sides of the track to ensure that the door is fully cushioned when it is closed, and the door will not be damaged. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.