The Gator Frameworks GFW-ACPNL1212PRED-8PK is an 8-pack of 2" thick, 12"x12" pyramid acoustic foam panels. The 3D pyramid design provides ample surface area for maximum sound absorption. They will improve the acoustics of your room by absorbing unwanted refelcted noise and echo during recording, playback, and mixing. These are great for recording and listening spaces such as podcasting, broadcasting, live streaming, home studios, drum rooms, control rooms, vocal booths, and rehearsal spaces.