Unique design enables CARICO Electro-Zinc Plated Collapsible Wire Containers to be collapsed easily in 3–4 seconds, and then stacked 30 high without banding. Ideal for warehousing, material handling, storing work in process, distribution, and picking/order operations. Electro-zinc plating prevents rust and protects products inside. Containers have solid hinges, enabling units to keep their shape. Wire foot design allows for quick stacking. No sharp edges. Lightweight, open design provides fast, visual inspection of inventory; promotes flow-thru ventilation; and eliminates dirt buildup. Made in USA. NOTE: Model 57666 can be stacked a total of 3 high when loaded. All others can stack 4 high when loaded.