19 Non-metallic building materials, including building panels, building tiles, building slabs, ceilings, ceiling tiles, panels and slabs, wall panels, slabs and tiles, claddings, linings and coatings for walls and ceilings in buildings; facings for building materials; partitions not of metal; non-metallic latticework, runners, hangers, profiles, trims, splices and clips for suspended ceilings and walls; parts and fittings for all aforesaid goods, not included in other classes; building materials for coating walls (other than paint); non-metallic coating materials (other than paints)