Soundsulate acoustical ceiling tiles are an excellent choice for absorbing sound within a room. Great for small businesses, restaurants, home theaters, offices, studios, or anywhere you are looking to reduce the noise, reverberation and echo in a space. They fit into a standard ceiling grid and can be cut easily with a utility knife. The backside of the tiles are made from high quality soft fiberglass and then finished with a rigid, matte black non-woven fabric. Light fixtures should be installed onto the ceiling grid and not the tiles themselves.