The Grainger website features 14 gauge open metal shelving components for freestanding metal shelving units. The shelves come in various widths and depths, with weight capacities up to 800 lbs per shelf. The posts and connectors are available in different heights to accommodate shelving units from 60" to 90" tall. The shelves have vented slots to promote air circulation. The components can be configured into shelving units for industrial, commercial, or retail use. All components are made from steel with a gray epoxy powder coat finish.