Metal grids; Frameworks of metal for ceilings; Metal materials for use in ceiling construction; Suspended ceilings of metal; Metal ceiling installations

Non-metallic building products; Non-metallic ceiling panels; Non-metallic ceiling tiles; Non-metallic ceiling tiles having sound insulation properties; Acoustic ceilings; Acoustic board for ceilings (other than for insulation); Non-metallic walls; Non-metallic walls for buildings; Wood panelling; Acoustic panels of wood for ceilings; Artificial wood for building purposes