6 Metallic pergolas, primarily of metal; double glazing panels of metal in the nature of building panels, window panels being window frames, and door panels of metal, all incorporating insulating glass; metal fence and door panels for enclosures; metal railings; metal ceiling panels; runners of metal for sliding doors; window frames of metal; skylight windows of metal; window sills of metal; all of the foregoing for use in the construction of commercial buildings, residential buildings, prefabricated commercial buildings, offices, shelters and houses; transportable buildings of metal, namely, storage facilities, offices, recreation facilities, parking facilities, bus shelters, commercial buildings, restaurants, terraces and houses; metal construction canopies; metal railings.