Extra shelves for Safco Industrial Wire Shelving offer a dust-free wire design. Flexible design allows for 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.