The Metro LTTM18C Track Shelving Kit is designed for efficient storage and organization. This Super Erecta® Double Deep Top-Track Mobile Unit Kit features an 18-inch width and includes essential components such as sturdy posts, durable casters, caster channels, donut bumpers, roller bearing assemblies, and tie-together hardware. Please note that shelves are sold separately, allowing you to customize your storage solution to fit your specific needs. Ideal for maximizing space in various environments, this mobile unit enhances accessibility and flexibility in your storage setup.