Material: High Quality Steel.
Door weight capacity: 200 lb; Fit door panel width: 36"; Door panel thickness: 1 3/8" and 1 3/4".
Package Include: 6.6ft(2x3.3ft) Rail,5xRail Spacer,2xRoller,2xDoor Stop,2xEnd Cap,1xFloor Guide,1xHex Key;All other necessary hardware is included as you see in the pictures. For 16 inch stud. ONLY the hardware is for sale, DOOR NOT INCLUDED.