6 Boxes of common metal; Building panels of metal; Construction elements made of metal, namely, fabricated metal components for building foundations; Containers of metal for chemicals, compressed gases and liquids; Drain pipes of metal; Ducts and pipes of metal for central heating installations; Ducts of metal for ventilating and air-conditioning installations; Elbows of metal for pipes; Metal boxes; Metal heating ducts; Metal ladders; Metal modular homes comprised of modular metal boxes with piping, ladders, EMT (Electrical Metallic Tubing), and duct; Metal pipe connectors; Metal pipe fittings; Metal pipes and tubes; Metal pipes for liquid and gas transfer; Metal tubing; Metal pre-fabricated stables; Modular metallic buildings; Pre-fabricated metal building assembly kits; Steel pipes; Transportable metal constructions; Valves of metal, other than parts of machines; Ventilating ducts of metal; Water-pipe valves of metal