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.