The Metro MXTTA21 Track Shelving Kit is designed for efficient storage solutions. This kit features a 21"W stationary intermediate unit that includes four 86"H corrosion-proof polymer posts, track supports, and all necessary hardware for assembly. It is compatible with MetroMax® 4™ and MetroMax® Q™ shelves, allowing for versatile configurations to meet your storage needs. NSF certified, this shelving kit ensures durability and safety in various environments. Ideal for maximizing vertical space while maintaining easy access to stored items.