19 Building panels, not of metal; construction materials, not of metal; wall claddings, not of metal, for building; door panels, not of metal; reinforcing materials, not of metal, for building; non-metallic materials for exclusive use in building or construction; refractory construction materials, not of metal; wood panelling; tempered glass for building; insulation glass for building; fireproof tiles; tiles, not of metal, for building.