The Studiofoam Wedges by Auralex Acoustics, are acoustic panels with an anechoic wedge shaped surface, offering outstanding sound absorption. This package includes 12 x 2-inch-thick panels, that are 2 feet wide and 4 feet long; giving you a total coverage of 96 sq. feet. The Noise Reduction Coefficient (NRC) rating is 0.80 - which is marginally the most effective of the Auralex Studiofoam product line. Available in burgundy, charcoal and purple.