Super Erecta qwikSLOT shelving is one of the most flexible and adjustable shelving systems available. Incorporating the strength and attractive look of the Super Erecta design, Super Erecta qwikSLOT shelving is the easiest system to assemble and adjust, designed to meet your changing needs. qwikSLOT wire shelving allows for the addition, removal, or adjustment of intermediate shelves easily in seconds, at 1-inch increments. qwikSLOT wire shelving can change as your needs change. No tools required for assembly . Optional casters can be added for mobile units.