Modular Super Erecta Shelf Shelving can be easily assembled into shelves and carts in various sizes. No special tools required. Four Shelving types available. Open- for light, air penetration. Solid Flat - loads, unloads from all sides, Solid embossed - circulation under stored items, Solid covered/embossed - uniform temperature, air flow. Posts available in chrome and stainless steel - heights 14 1/2, 34 1/2, 59 9/16, 62 9/16, 74 6/8, 86 5/8.