The strongest, most versatile, corrosion proof shelving system in the world. All polymer corrosion proof shelving constructed of advanced polymers and Type 304 stainless corners. Shelves adjust in 1" increments. Removable, easy-to-clean open grid mats promote air circulation and light penetration. Lifetime warranty against rust and corrosion. Built-in Microban antimicrobial product protection to keep the product "cleaner between cleanings".