Acoustic Foam Sound Absorption Pyramid Studio Treatment Wall Panel, 48" X 24" X 2" Pyramid foam provides moderate sound control on walls or ceilings, especially ones not parallel to the floor. This product is best for when absolute sound deadening is not required, but moderate deadening is desired. Great for spot treating sound on walls in your studio or office - For use in recording studios, control rooms, Offices home studios, home entertainment theaters, Home Offices Very Good Quality High NRC !! One of our thickest panels MADE IN USA - Fire Retardant: CA Technical Bulletin 117