Wainscotings for building purposes, not of metal or not mainly of metal; glass in the forms of plates, panels, blanks, profiles and half-shells for building; building glass; electrochromic windows, not of metal, for interior and exterior use; colored sheet glass for building purposes; decorative glass, ornamental glass and glass moulds for building purposes; building panels, not of metal; beams, not of metal; joists, not of metal; covings, not of metal, for building purposes in the nature of ...