Non-metallic building materials made from or incorporating rice hulls, rice particles or cellulose-based materials; building boards and panels (non-metallic) made from or incorporating rice hulls, rice particles or cellulose-based materials; posts and bollards (non-metallic) made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic mouldings for buildings made from or incorporating rice hulls, rice particles or cellulose-based materials; buildings (non-metallic) made from or incorporating rice hulls, rice particles or cellulose-based materials; ceiling panels (non-metallic) made from or incorporating rice hulls, rice particles or cellulose-based materials; fibre-board and shaped and formed products for building purposes made from or incorporating rice hulls, rice particles or cellulose-based materials; manufactured boards, panels, sheets and shaped and formed building products made from rice hulls, rice particles and/or cellulose-based materials; boards of cellulose materials for building purposes; non-metallic composite materials made from or incorporating rice hulls, rice particles or cellulose-based materials for use in building; non-metallic manufactured building elements incorporating rice hulls, rice particles or cellulose materials; organic fibres comprising rice hulls, rice particles or cellulose-based materials for building purposes; acoustic building materials (other than for insulation) made from or incorporating rice hulls, rice particles or cellulose-based materials; acoustic boards, panels, sheets, screens and tiles (other than for insulation) made from or incorporating rice hulls, rice particles or cellulose-based materials; acoustic ceilings, and acoustic panels and boards for ceilings (other than for insulation), made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic building materials having acoustic properties made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic building materials having thermal insulation properties made from or incorporating rice hulls, rice particles or cellulose-based materials; thermally insulating building materials (non-metallic) made from or incorporating rice hulls, rice particles or cellulose-based materials; laminated building materials (non-metallic) made from or incorporating rice hulls, rice particles or cellulose-based materials; laminated fibre-board and shaped and formed products for building purposes made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic laminated boards, building panels, ceiling panels and sheets made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic infill panels made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic structural building members made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic structural support members made from or incorporating rice hulls, rice particles or cellulose-based materials; non-metallic reinforcing materials, members, bars and articles for building, made from or incorporating rice hulls, rice particles or cellulose-based materials