Hyper Tough Steel 4-Tier Storage Shelf Unit is perfect for all your organizational needs. It has strong and durable welded wire construction in white color. Open wire design allows air circulation and reduces dust build-up. Shelves can be adjusted in 1 inch increments. Each shelf can hold up to 350 lbs. evenly distributed. Adjustable foot levelers for uneven floors. This product is designed to be used by adult. This wire shelving system is perfect for commercial and home use and any other places you need to organize.