The Metro TTM18K4 Track Shelving Kit is designed for efficient storage solutions with its Super Erecta® Top-Track Mobile Unit configuration. This kit features 18-inch wide Metroseal Gray epoxy-coated posts that are corrosion-resistant and equipped with Microban® antimicrobial protection, ensuring a cleaner environment. It includes essential components such as casters and caster channels for smooth mobility, donut bumpers for added protection, and roller bearing assemblies for enhanced stability. One kit is required for each mobile unit, with shelves sold separately, allowing for customizable storage options tailored to your needs.