Plastic shelf bins are tough and durable, made from injection molded polypropylene material. These bins will last a lifetime and can replace worn out corrugated cardboard bins. Quantum's tough, durable, high density Economy Shelf Bins are the industry standard for quality. These durable polypropylene bins feature a molded-in label holder, built-in rear hanglock which allows bins to tilt out for complete access when on shelving. A wide hopper front allows complete access to the contents of the bin. Edges are reinforced for added strength. They are designed for 18" deep shelf units, racks or standard shelving. Bins are impervious to most chemicals. All bins can accommodate up to 7 dividers.