24FT Bypass Sliding Barn Door Hardware Kit for Double Wooden Door ,No Door,Material Track Carbon Steel Black Roller High quality steel wheel material Premium nylon Door Max Weight Capacity: Up to 330lbs every pair rollers Fits sliding Door Thickness: From 1 3 16" to 2" The top of the Doors to the ceiling : Min distance is 5. 5" Our Product Sprcial Design: Carbon Steel Roller Super load bearing capacity, inner nylon wheels, will not wear the track when rolling. Adjustable Screw The roller screws can be adjusted freely in any