Aero NSF Aerospec Table Mounted Double Overshelf - 14 Gauge, 15 inch width -- 1 each.Shelf has 11 /2" turn down on 4 sides. Legs mounted into Aerolock aluminum extrusions for extra strength. Fully adjustable Aerolock aluminum extrusions allow mid shelf to be placed at any height (suggested height is 18" above table). Easily assembled. K.D. design means UPS shipment for many sizes. EXCLUSIVE AERO SAFETY EDGE Shelves hemmed to eliminate cuts from rough edges. CONSTRUCTION Shelf is polished to a #4 mill finish. Shipped complete with 15 /8" rubber expander assembly All shelves shipped K.D.