This 20"L x 12 1/2"W x 10 1/2"H steel stacking rack has a patented interlocking system so that no tools or fasteners are needed to assemble a complete bin or box storage system. Weight capacities are limited only by the individual bin or box capacity, making your stacking rack system truly versatile. Accepts 20" x 12" x 10" stacking bins and boxes. Finish is baked enamel in choice of gray, blue, beige, black or green.