Building materials made from metal, especially metal roofs, roofing materials, prefabricated roof elements, roof dormers, prefabricated metal elements as parts of glass roofs, roof gutter, window sills, doors and windows, including roof windows, building materials made from metal as parts of roof trusses, fittings an non electrical locks, ventilation and smoke exhaust flaps, folding shutters, rolling shutter, external metal blinds as well as construction materials made from metal for use in c...