6.6 ft Sliding Track Barn Door Hardware Set fits door panel thickness from 1 3/8' to 1 3/4' Durable Construction - Made of aluminum alloy, sturdy enough to withstand up to 220 Lbs without wobbling Adjustable & Safe - Adjustable roller stopper can be fixed at any position of the track, anti-jump disks to prevent rollers from jumping off DIY Installation - Customize the track length by splicing different numbers of tracks Wide Application - Fits wooden & concrete walls, ideal for bedroom, living room