Material:Aluminium alloy Wall mount sliding system with invisible track in front;Suitable for wood doors weighing up to 176 lb (80 kg) Suitable for door thickness? 1 3/4″;Fit door width up to 34″;The track can be cut for smaller door panel Full set hardware including:wall mount rollerX1;42″ sliding trackX1;end capX2;soft close mechanismX2;stopX2;floor roller X2;L bracketX2;42″adhear floor railX2 Its unique hardware and concealed track create the illusion of a floating door.