Aluminum alloys; [ Aluminum foil; Drain pipes of metal; ] Ducts of metal for air-conditioning installations; [ Ducts of metal for ventilating and air-conditioning installations; ] Hardware, namely, metal brackets for general use; Metal air conditioning ducts; Metal mounting brackets for general use; [ Roof coverings of metal; Roof flashing of metal; Roofing of metal, incorporating photovoltaic cells; ] Sheet metal [ ; Strike plates of metal ]