Open hopper front and back lets you access items from either end. QUANTUM QuickPick Bins stack vertically, cross-stack, and nest when empty for convenient storage. Both hopper ends feature a molded in label holder. Fits standard metal or wire shelving. Optional black dividers fit front-to-back, side-to-side, or both directions at the same time to create four storage compartments. Order bins in quantities specified, priced each. Made in USA.