The 18 & 20 Gauge Steel Open Shelving are easy access to product, high visibility and air flow from all sides. Units are available in 18 & 20 gauge, 4 heights and 15 shelf sizes. Each add-on unit includes 2 offset posts (punched on 1" centers for easy adjustment), one beaded post, one pair back sway braces, one pair side sway braces and selected number of shelves with corresponding hardware (nuts and bolts for top and bottom shelves, clips for intermediate shelves). Shelves are engineered for superior strength and are triple bent on all four sides. Closed Steel Shelving units are ideal for industrial and commercial storage and organization. Closed shelving provides extra protection from dirt & dust, creates separation between areas and prevents product from falling off sides or back of unit. Units are available in 18 & 20 gauge, 4 heights and 15 shelf sizes. Each starter unit includes 4 offset posts (punched on 1" centers for easy adjustment), one back panel, 2 side panels and selected number of shelves with corresponding hardware (nuts and bolts for top and bottom shelves, clips for intermediate shelves).