The Metro MXTTM21C Track Shelving Kit is designed for efficient storage and mobility. This kit includes four corrosion-proof posts standing 74 inches tall, ensuring durability in various environments. It features four bumpers and roller assemblies for smooth movement, along with two caster channels and four plate casters for easy maneuverability. The kit is compatible with MetroMax® 4™ and MetroMax® Q™ shelves, allowing for versatile shelving solutions. NSF certified, this mobile unit kit is ideal for optimizing space and enhancing organization in commercial settings.