PyramidsPlus Soundproofing Panels
Pyramids Plus are 2'x2' square foam panels made of class A fire rated melamine foam. The panels are availalbe in 2", 3" or 4" thickness. The thicker the panel, the better your performance values at the low base frequency levels. Ideal for controlling noise in schools, music rooms, churches, recording studios, and factories with high heat or open flame noise sources. The panels have the Pyramid bevel in their design, which generates a seamless appearance as they are applied to your perimeter wall or ceiling surfaces.
More information: http://www.controlnoise.com/pyramids-plus-foam-panels/