12pcs Acoustic Foam Panel, Sound Insulation Foam Panel, Noise Reduction Mat, for Music Studio Bedroom Home, etc., 5X30x30cm[Professional Sound Absorbing Performance] Sound Insulation Foam Panels were installed to reduce noise pollution. They can effectively reduce reverberation, floating echo, unwanted sound reflections, and unnecessary noise. Sound insulation foam panel is used to control the sound of reverberation, which is quite different from sound insulation. [High Density Fireproof Material]-The soundproof wall panel is made of high-density polyurethane foam, 50/lb per cubic meter. It has a thickness of 2 inches, which is 25% denser than similar products, and the material is formaldehyde-free, which makes it safe. Sound-absorbing foam is flame retardant to prevent the spread of fire and ensure safety. [Compressed packaging] sound-absorbing foam is compressed by vacuum packaging and should be placed in a well-ventilated place for about 24-72 hours. If you leave the product for 24-72 hours before installation and still can't fully unroll it, make sure you submerge in water for 2-3 minutes, you will be able to unroll to normal size. [Easy Installation] The sound-absorbing foam can be used as an acoustic cover for walls, ceilings and doors. You only need to easily cut double-sided tape (not included). Cliché Mat