LTIYITL 4ft Bi-Folding Sliding Barn Door HardwareSmoothly and Quietly-Heavy Duty -Simple and Easy to Install for 2 Doors Hardware KitBasicJNo

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:4FT/48″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 6from 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.