Harmoni 180 is a new flat panel acoustic metal ceiling system. The ceiling appears flat with no visible fixings shown. An acoustic tissue backing is an option or alternatively acoustic absorption with a glasswool, polyester insulation blanket or acoustic foam such as Basotect G installed behind is possible. Harmoni 180 is available in long lengths. ISO 5660-1 Group 1S classification (in accordance with NZBC Verification Method C/VM2 Appendix A).