Base price is for a shelving unit with 3 shelves, you can add more shelves, wheels, liners if available. 36" H x 18" W x 18" D Shelf Finish Chrome: NSF certified - chrome plated shelving is the traditional wire shelving found in most garages, offices, closets, warehouses, kitchens and restaurants. Black Epoxy: NSF certified - the black epoxy shelving units are perfect for most garages, offices, closets and warehouses. All types of wire shelving have the same build and look virtually identical structurally. Each shelf has a weight capacity of up to 600 lbs. evenly distributed (note that due to the stress on the wheels/casters, weight capacity is reduced to 200 lbs per shelf if wheels/casters are attached). Included in all three sizes are screw-in leveling feet for height adjustments and stabilization of the unit.