SiteSelect posts provide a visual guide for positioning and adjusting shelves. An easy-to-identify double groove every 8" offers a quick way to align all shelves. Stationary posts include an adjustable leveling foot. Mobile posts come without leveling bolt assembly to accommodate stem casters.Corrosion resistant Metroseal Green epoxy finish features Microban antimicrobial product protection to keep the product "cleaner between cleanings". 12-year warranty against rust and corrosion.