CCJH 6.6FT/80'' Bi-Folding Barn Door Hardware Sliding Track kit Heavy Duty for 4 Doors No Wood Door Hardwware OnlyAbout this item [SUPERIOR QUALITY]: The bifold door hardware kit is made of high quality Carbon Steel with frosted black surface, rust resistance, durable, can maintain its beauty and longevity for many years. [TRACK SIZE CHOICE]: This 6. 6ft 80'' kit fit max door panel width 19. 2''. Each single door panel width is the size of the door opening divided by 4 plus 1" and the track should be more than 150 mm 6" wider than the door opening. [STABLE AND