Abstract: A metal canopy for a structure has an expansion strut which is directly affixed to a wall of the structure and at least one panel assembly for attachment to the expansion strut. More than one of the expansion struts may be affixed to the wall in abutting relationship to lengthen the span of the canopy. The expansion strut has flanges around its edges for attachment of the panel assembly or assemblies. A plurality of outwardly angled tabs are also positioned on the strut. Each of the panel assemblies has at least two panels, each of which has an upwardly extending flange along each of its sides, with adjacent panels aligned with corresponding flanges in abutting relationship. The panel assembly also has first and second end pieces affixed to an outside edge of the panel assembly along the outside edge of the outermost panels, with the end pieces having a bottom edge and a side edge.