20 Gauge 5-Shelf Shelving Unit - 20G-87-1542-5 - 15&quot; x 42&quot; x 87&quot; by Quantum. $146.00. Open Shelving Units are ideal for industrial and commercial storage and organization. Shelving offers easy access to product, high visibility and air flow from all sides. Units are available in 18 &amp; 20 gauge, 4 heights and 15 shelf sizes. Each starter kit includes 4 offset posts (punched on 1 centers for easy adjustment), one pair back sway braces, 2 pair side sway braces and selected ...