Quantum® Ultra Stack and Hang Bin features a built-in rear hanger for easy hanging from louvered panels or rails and extra-wide stacking ledge with anti-slide stop for secure stacking. Reinforced rib design adds strength and prevents spreading. Heavy-duty, high-density polypropylene resists rust and corrosion. Compliant with clean utility room standards. Great for use with Wire Louvered Panels or Solid Louvered Panels (all sold separately). Available in various sizes and colors. Sold 4, 6, or 12 bins per case.