2-inch Studiofoam Wedges are used to treat most small to medium sized areas, including vocal booths, control rooms, studios, broadcast facilities, home theaters, rehearsal rooms. 2" Studiofoam Wedges are our most popular seller and our best overall absorber! Use 'em to treat small - to medium-sized areas including vocal booths, control rooms and sound studios. They effectively kill standing waves and flutter echoes and, when used in conjunction with our LENRD or Venus Bass Traps or our Sunburst Broadband Absorbers, can effectively tame the full frequency bandwidth in virtually any room. 2" acoustic Studiofoam is quite simply the workhorse of the industry and is your safest bet if you're tuning your room yourself without the help of a professional acoustician.