Building curtain walls made primarily of metal; Building wall framing made primarily of metal; Common metal drawer pulls; Joists of iron or steel; Metal chimney cowls; Metal residential and agricultural shelters; Metal structures for mounting solar panels; Modular metal animal houses for pigs, dogs, chickens; Modular metallic buildings; Pre-fabricated metal houses for pigs, dogs, chickens; Staircases of metal; Stairs of metal; Transportable metal constructions