Building materials of metal, namely, grids of metal; ceiling systems of metal for attaching ceiling panels comprised of grids, furring, hooks, clips and wires

Insulating materials of mineral wool; packing, stopping and insulating materials; acoustic and thermal insulating material; acoustical and thermal insulators; insulation barrier panels; acoustic insulators comprised of mineral wool and fibres insulators; insulating materials comprised of mineral wool for use in building

Ceiling panels of mineral fibres; non-metal building materials, namely, wall and ceiling panels made of mineral wool and mineral wool fibres