Dimensions: 48W x 24D x 72H in.. Made from strong solid steel. Finished in a black anthracite. National Sanitation Foundation certified for wet and dry environments. Holds up to 1,000 lbs. per shelf when evenly distributed. Can be set up as one 4-tier rack or as two 2-tier racks to fit specific needs. The Alera Wire Shelving Starter Kit with 4 Shelves - 48W x 24D x 72H in. takes your storage area or garage from cluttered to tidy in no time. The wide frame is crafted from thick steel with tough wire shelves, supporting up to 1,000 pounds per shelf. Build the unit as a four-tier tower or two 2-tier shelving units as desired. The frame is kept safe from corrosion and scratches by a black anthracite finish.