The Auralex B248OBS ProPanel Fabric-Wrapped Acoustical Absorption Panel is a 2" x 4' x 8', obsidian-colored, beveled-edge panel designed for dealing with acoustic problems in recording studios, mastering rooms, houses of worship, and home theaters. Use it to reduce distracting reverb, improve speech intelligibility, and lessen problematic reflections and flutter echo. Improving the sonic accuracy of a room will result in a more pleasing and productive experience in the space. The panel is constructed from class A fire-rated foam wrapped in obsidian-colored fabric. It has beveled edges and a noise reduction coefficient of 1.05. The panel can be hung from the wall using the included impaling clips or from the ceiling using a variety of clips and anchors (sold separately).