Aero NSF Economy Single Table Mounted Overshelf - 16 Gauge, 18 inch wide -- 1 each.DESIGN FEATURES Shelf has 11 /2" turn down on 4 sides. Legs mounted into Aerolock aluminum extrusions for extra strength. 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.