The Metro LBTM21K4 is a high-density double deep storage system designed for efficient organization and mobility. This mobile unit kit includes eight 74-inch posts, four V-groove casters, and one 21-inch center channel caster assembly, ensuring smooth movement and stability. It features donut bumpers and tie bar brackets with all necessary hardware for easy assembly. The Metroseal Gray epoxy-coated finish provides corrosion resistance, while Microban® antimicrobial protection helps maintain a cleaner environment. Ideal for maximizing storage space in various settings, this track shelving system combines durability with functionality.