HSS 4 Tier Wire Shelving Rack is perfect for all your organizational needs. It has strong and durable welded wire construction. Ventilated design reduces dust and dirt build-up. NSF certified for dry environment storage. Shelves can be adjusted in 1 inch increments. Each shelf can hold up to 250 lbs evenly distributed. This wire shelving system is perfect for homes, offices, warehouses, kitchens, restaurants and any other places you need to organize.