... material. The components’ limit of fire resistance above 3 hours2: Sound Insulation: the insulation effects reach 54Db3: Light weight with high ... respiratory function, can adjust indoor humidity9:Quick and easy to install, The board can be nailed,drilled,planed,sawn and notched10 ... Any interest, pls contact me feel free!!Kind regards,Reta sound barrier panels used as wall partition, ceiling, five star ...