This QUANTUM STORAGE SYSTEMS hang and stack bin is durable, injection-molded, polypropylene material with front, back, and side grips to ease handling. Bin features a rear hanger so you can hang it from a louvered panel or rail for added versatility. The wide stacking ledge and anti-slide lock help keep stacked bins steady and to prevent forward shifting. Resists extreme cold and autoclavable up to 250°F. Large molded front label slot for an identification label.