Industrial wire shelving offers a dust-free wire design & adjustable leveling feet with plastic caps to protect floors. Flexible design allows 1" shelf adjustments & 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 & prevents dust accumulation. Add-on (sold separately) & 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 & snap-together clips. Add-on unit (sold separately) includes four shelves, two posts & snap-together clips.