USA Z Rack, 5' Base, 5' Upright w/ Bottom Shelf5 Foot Rolling Z Rack with Fold Up Bottom Shelf Our Z5B5U RS commercial grade garment rack adds the convenience of a fold up bottom shelf to our standard garment rack. Of course standard for us is far beyond the standards of most manufacturers, because our Z5B5U RS still has the same all metal construction, 500 pound load capacity, heavy duty casters and large wheels as our other high quality, U. S. made rolling garment racks. The bottom shelf allows