Metal clamp-type fasteners for holding in place curtains, tarps, canvas, cloth and film covering material; Prefabricated metal structures with flexible covers for agricultural, commercial or industrial storage; Metal residential and agricultural shelters; Fences of metal; Metal mounting brackets for general use; Transportable greenhouses of metal for household use; Greenhouses of metal, transportable; Metal greenhouses; Metal greenhouse frames; Metal frame to support and accommodate use of le...