Select Sound® Black Acoustic Boards are made of inorganic glass fibers with a thermosetting resin binder and formed into rigid rectangular boards that are dimensionally stable and will not shrink or warp. Select Sound® Black Acoustic Board comes with a smooth Black veil surface over a gray/Black board that provides low light reflectivity. The veil additionally aids in resisting damage during installation and service. When necessary, the durable Black veil facing may be cleaned by vacuuming.