This 10-3/4"L x 6-1/4"W x 4-3/4"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 # 1 stacking bins and boxes. Finish is baked enamel in choice of gray, blue, beige, black or green.