Extra shelves for Safco Industrial Wire Shelving offer a dust-free wire design. Flexible design allows 1" shelf adjustments and modular expansion. Each shelf holds 1,250 lb. evenly distributed. Wire shelving is made from strong, welded steel wire 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, add-on unit and 2 extra shelves are all sold separately.