Rear Edge Fold for Increased Stability Powder Coated Steel 55 lb Load Capacity 14.7″ Depth This 3 RU 19″ Rack Tray from Adam Hall fits into a 19″ wide rack, providing a storage shelf. It is made from powder coated steel for durability and corrosion resistance, and it features a 55 lb load capacity, so this tray can support items from small to large. The rear edge has a 0.39″ fold to increase stability, and the 14.7″ depth allows it to store larger items.