Industrial grade steel construction with Z-beam design for strength and rigidity. Holds up to 4000 lbs. total with its five fully adjustable shelves, or 800 lbs. With each shelf, based on evenly distributed loads. The five shelves are fully adjustable every to create a customized storage space with ease. Laminate board shelves resist moisture and are easy to clean. Smooth post design conceals. Durable and attractive silver vein finish.