Studiofoam® Pyramids are perfect for treating small to medium-sized areas, including isolation booths, control rooms and sound studios. Pyramids will help effectively kill standing waves and flutter echoes and, when used in conjunction with our LENRD® Bass Traps, tame the full frequency bandwidth in virtually any acoustic environment. Studiofoam® Pyramids are available in both 2″ and 4″ thicknesses.