Industrial wire shelving offers a dust-free wire design and adjustable leveling feet with plastic caps to protect floors. Flexible design allows 1" shelf adjustments and modular expansion. Each shelf holds 1,000 lb. evenly distributed. Wire shelving is made from strong, welded steel construction (10-gauge shelf surface, 3-gauge frame, 16-gauge posts, 6-gauge wave pattern) with a durable powder-coat finish. Open wire design permits air circulation and prevents dust accumulation. Add-on and starter units can be combined to expand your shelving system. Easy collar-and-sleeve assembly requires no tools. Starter unit includes four shelves, four posts and snap-together clips. Add-on unit is sold separately and includes four shelves, two posts and snap-together clips..