For use in kitchens, freezers, coolers, pantries or dry storage. Best for storing perishable products that benefit from airflow around them. Each kit includes 2 traverses and several vented shelf plates to build a single shelf. Dishwasher safe Camguard antimicrobial shelf plates. Made of smooth polypropylene. Wipes clean. Rustproof. Traverses each have a steel core and are designed to bear weight, like the posts. Warranty 1 year (lifetime warranty against rust and corrosion)