Stack these versatile QUANTUM Classic Series Stack and Lock Bins to make the most of your storage space. All-purpose storage bins are constructed of high-impact polystyrene material and have reinforced ribs that add strength and prevent spreading. Lock tabs at rear prevent stacked bins from sliding. Front grips accept labels or bar codes, while the rear lip lets bins hang from louvered panels, rails, and carts and fit on standard shelving. Order bins in quantities specified, priced each. Made in USA.