Smooth operating, non-binding top hung bi-fold hardware designed for use with solid core wood door panels. Includes shock absorbing hinges, top & bottom pivots, top guide, 4-way adjustable jamb bracket which corrects warped doors and allows installation without cutting carpet, door aligner, stops, knobs and wrench. Accommodates 2 bi-fold doors up to 18" wide 3/4" to 1-3/4" thick & up to 40 lb per panel.• Panel thickness: 3/4" to 1-3/4" [19mm to 44mm]• Max Weight: 40lbs. [18kg] per panel• No track• Smooth operating, non-binding top hung bi-fold hardware designed for use with solid core wood door panels.