The optional easy-mount ZBT cover supports mount on any of our Traditional Z Rack models that begin with Z4B or Z5B. They can be used with either our clear vinyl rack covers or our navy, nylon heavy-duty covers. They mount on the uprights to form a T above the hang bar. Besides providing a neat appearance they allow easy access to your clothing. You can retro fit this item to your existing Z4B or Z5B garment rack and cover. Cover supports add 3" to overall garment rack height.