6 Tier Adjustable Metal Shelf Adjustable Shelf: The storage shelf layer can be set at any height according to your personal needs. The metal frame can hold various items. Wire Shelfing Unit helps organize garages, kitchens, offices, etc. High Quality: The metal shelf is made of heavy-duty steel, has high strength and durability, and has excellent rust and oxidation resistance.The shelves of each layer are additionally reinforced with ribs, making the shelves more durable and capable of placing heavier and more items. Each shelf has a weight limit of 1000 pounds. The total weight limit of the whole shelf is 6000 pounds when equally distributed on feet levelers. The total weight limit of the whole shelf is 600 pounds when equally distributed on casters.