Doors of metal for security purposes; metal building elements for security structures; metal roller shutter doors for security purposes; metal security barriers; prefabricated security vaults (safes); security boxes (safes); security closures of metal; security devices of metal, other than for vehicles; security door frames of metal for buildings; security doors of metal for buildings; security shutters of metal; security units (safes); insect screens of metal; insect screens of metal for doors; insect screens of metal for windows; metallic insect screens for doors; metallic insect screens for windows