Hardware works with doors of 1-1/4" to 2 " thickness. We tested 350lbs on one door (2hangers) one track and it held fine. We estimate the track and hangers will hold 450 or more lbs if installed correctly into studs.The item "Double-sliding-barn-door-hardware-rustic-black-barn-sliding-track-10 ft" is in sale since Sunday, April 23, 2017. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Other Door Hardware". The seller is "veym2413" and is located in Orem, Utah. This item can be shipped to United States.