Quantum Storage Systems Economy Bins Tough, durable, and economical solution for storing and organizing supplies. Wide bin hopper front with reinforced edges allows easy access to contents. FDA-approved, injection-molded polypropylene with molded-in label holders. Empty bins nest for convenient storage. Fits 12"D, 18"D, or 24"D shelves. 4"H. Specify Blue, Ivory, Yellow, Green, Red, Pink, or Black when ordering.