Studiofoam Metro is available in two popular thicknesses, 2” and 4”, similar to Studiofoam Pyramid. Studiofoam Metro offers a unique aesthetic while maintaining the superior performance of Studiofoam. They effectively kill standing waves and flutter echoes and, when used in conjunction with our MetroLENRD bass traps or venus bass traps or our Sunburst broadband absorbers, can effectively tame the full frequency bandwidth in virtually any acoustic environment.