The Metro LBTM21C is a high-density track shelving system designed for efficient double deep storage. This mobile unit kit features eight sturdy 74-inch posts, ensuring robust support for your storage needs. It includes a V-groove caster for smooth mobility and a 21-inch center channel caster assembly for enhanced stability. The kit also comes with donut bumpers, tie bar brackets, and all necessary hardware for easy assembly. Finished in chrome, this system combines durability with a sleek appearance, making it ideal for various storage applications.