6 metal roofing materials and accessories, namely roofing tiles, roof ventilating ducts, roof vent covers, ventilating pipes, finished ridges in the nature of metal strips, light pans for use as vent covers, roof windows, dormer ventilation ducts, ventilation tiles, vents in the form of stretched bridging sheets and undercloaks, foil clamping connectors, clamps in the nature of antenna-passage attachments, clamps for attaching electric mast feeders and flag poles, facade profiles in the nature of metal sheets, climbing steps, snow collecting grates, fasteners in the nature of hooks, nails, screws, bolts and clips for standing boards, snow grates, stepping grates, climbing steps for roof hooks, solar collector supports in the nature of metal beams, flower boxes for roofs, holding and fastening hardware in the nature of hooks, nails, screws, bolts and clips for roofs and walls, drainage and ventilation construction parts in the nature of pipes and ducts, and roof ridges in the nature of metal strips