Increase your storage efficiency with the Metro Super Adjustable Wire Shelving Adder Unit. The patented unique corner release system allows you to adjust and add shelves with no need for tools. The corner release allows for repositioning of shelves during initial assembly to reclaim wasted vertical space. In some cases, reclaimed vertical space can allow for another shelf to be added. Constructed from chrome-plated steel, the wire shelves maximize visibility, ventilation and airflow.