Absorption Area Increased to 144 per sheet 3D unique pyramid acoustic design, the soundproof panels absorb flutter echo, reverberation and standing waves more effectively by increasing the contact area with the sound,Quality Sound absorbing foam panels are made of professional grade, soft, safe foam sponge, and the open-cell design is used for high quality sound absorption in various sound insulation projects,Suitable on various scene: The sound absorbing panels are ideal for recording studio, game rooms, make voice capture more intelligible, pleasant, and clean, save you a good amount of editing time,12 pack of 1" x 12" x 12" soundproof foams, can easily cover an area of 11.6 square feet. It can be used flexibly from large area to corner area,Easy to install. You can use strong adhesive or double-sided tape to make the sound insulation foam board stick firmly to the wall, ceiling or door