High Density Flame Resistant Sound Absorbing Padding For, 14 X 12 X 0.4 In. UNIQUE HEXAGONAL DESIGN: These 14 x 12 x 0.4 inches hexagonal acoustic panels are different from the conventional square foam sound insulation boards. Hexagonal designs can be piecing together freely, not only for sound absorption, but also for best decoration for your room, doors and ceilings. Choose different colors to create your art wall now? SELF-ADHESIVE, EASY INSTALLATION: There is a self-adhesive tab covering the entire back of our sound proof panels for walls that can easily stick to any smooth surface. No special tools or materials are needed for installation. And you can easily cut the sound panels with a sharp knife to make different designs with the individual panels, and give full play to your creativity. EXCELLENT SOUND ABSORPTION: 9.7 lb/ft density sound proof wall panels can effectively absorb reverb, flutter echoes, undesirable acoustic reflections, unwanted noises and reduce waves. They are perfect for game rooms, rehearsal rooms, concert halls, home theaters, etc. In addition to using acoustic panels to dilute the sound, you can also use it to enhance the acoustics in a room, like in a recording studio. HIGH-QUALITY ECO-FRIENDLY: Our acoustic proof padding are made of high-density polyester fiber material, ensuring a grade of noise reduction coefficient: 0.92 and absorption coefficient: 0.8! Besides abrasion resistance, and scratch resistance, they are odorless, non-toxic, formaldehyde-free, and flame retardant which is both safe to breathe in and touch. 100% SATISFACTION: Our acoustic panels set is of high quality and is the absolutely best choice. If you you have any problems, please feel free to contact us. And If you are not 100% satisfaction for our acoustic panels, we promise a 100% refund or replacement. And your satisfaction is our priority! NOTE: If you want to remove the Sound Proof Wall Panels without harming the wall, heat the panel adhesive with a hair dryer to soften it, then remove the panel as gently as possible. However, if the paint is aged or damaged, it may remove the paint.