Unique design lets you step-stack same width AKRO-MILS Economy Stack and Nest Bins of varying lengths to give you easy access to stored contents. Reinforced side ribs support stacked storage bins and prevent spreading when fully loaded. Space-saving design nests, as well, for convenient storage. One-piece molded polypropylene construction resists water, rust and corrosion. Front handles feature large label areas to identify stored items. Ideal for use on 18" and 24" shelving. Order in quantities specified, priced each.