Cladding panels of metal incorporating thermally insulating materials; Door casings of metal; Door fasteners of metal; Door fittings of metal; Door flaps of metal; Door frames of metal; Door guards of metal; Door handles of metal; Door hinges of metal; Door panels of metal; Door sections of metal; External door frames of metal; External doors of metal; Fittings of metal for windows; Frames of metal for windows; Glazed windows (metal frame); Insulating doors of metal; Metal casement windows; Metal components for windows; Metal door surrounds; Metal doors; Metal double glazing panels incorporating insulating glass; Metal fitted windows; Metal fittings for windows; Metal louvre window assemblies; Metal mountings for windows; Metal skylight windows; Metal window fasteners; Metal window frames; Metal windows; Metallic window frames; Pre-formed insulation components (metal building materials); Prefabricated doors of metal (other than for furniture); Ready made door frames made of metal; Ready made doors made of metal; Ready made window frames made of metal; Ready made windows made of metal; Sliding doors of metal for buildings; Structural parts of metal of windows; Window glazing fixtures made of metal; Window guards of metal; Window surrounds of metal