[ sound insulation] Made of 215 kg/ high-density environmentally friendly polyester fiber cotton, sound insulation foam has great advantages in reducing and absorbing noise. In addition, the sound insulation foam panel performs in the noise reduction test ,B1 class retardant, Reaching 0.95 level, most audio panels on the market.[]: Fashionable design doubles as decorative wall art for your favorite space. It can be used in recording studios, KTVs, offices, home theaters, etc., allowing you to leave countless beautiful memories in a comfortable environment.[Good noise reduction]: If you are mixing in a studio, you must lower the sound. Unnecessary noise during recording will destroy it. The sound-absorbing board can the sound produced by low frequency, middle frequency and high frequency, which is suitable for recording.[Easy to install]: With self-adhesive design, you just need to tear off the top on the back and stick the sound insulation board to the wall. They can be used as acoustic covers for walls, ceilings and doors, just use glue or tape to connect . Easy to shape and cut to size, easy to change without affecting performance, no tools or materials required.[Wide application] High-quality acoustic treatment suitable for many occasions, not live sound on the walls of studios and offices, also for recording studios, control rooms, office home theaters, and home offices. In addition, sound insulation foam board also has a of colors, which is a good for .Colour:blackMaterial:polyester fiber cottonSize: 30 x 30 x 0.9cmPackage Contents:12 x Sound absorbing panel(Adhesive: random color, 't accept the specified color)Only the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.