6 OPENINGS EQUIPMENT IN THE INDUSTRIAL, PROFESSIONAL AND PRIVATE BUILDINGS FLEXIBLE DOORS FOR INDUSTRIAL BUILDINGS, PROTECTIVE DOORS, HANDLING DOORS FOR THE PASSAGE OF ALL TYPES OF VEHICLES, RIGID DOORS, RAISABLE ACCORDION OR WINDING DOORS, LATERALLY OPENING DOORS, TILTING DOORS, FLAPPING DOORS, CURTAIN DOORS WITH STRIPS, INSULATING DOORS, TRANSPARENT DOORS, DOORS INCLUDING A FLEXIBLE PLASTIC CURTAIN; PARTS CONSTITUENT OF THESE PRODUCTS ALL THESE PRODUCTS INCLUDING METALLIC ELEMENTS