The Metro TTM18C Track Shelving Kit is designed for efficient storage and mobility. This Super Erecta® Top-Track Mobile Unit Kit features an 18-inch width and includes essential components such as posts, casters, caster channels, donut bumpers, and roller bearing assemblies. The chrome-plated finish ensures durability and a sleek appearance. Each mobile unit requires one kit, while shelves are sold separately. This product is NSF certified, making it suitable for various commercial environments.