StudiofoamPro is the first melamine-free acoustical foam with a Class A fire rating. Even though its profile is a slim 1.5" thick, StudiofoamPro offers a higher noise reduction coefficient (NRC =.90) than 2" Studiofoam Wedges, Auralex's most popular product and a world standard.</p><p>StudiofoamPro presents a low-cost option for sound absorption in churches, restaurants, clubs, professional settings and other venues that require Class A fire-rated acoustical treatment.</p><p>Due to our proprietary chemical formulation, StudiofoamPro has all the traditional benefits of Auralex's industry-leading Studiofoam, including outstanding durability due to reduced oxidation. StudiofoamPro will not rot, crumble or suffer surface harm from normal use like other Class A alternatives such as melamine are reported to. Plus, it's more affordable!</p><p>StudiofoamPro is available in two sizes: 2' x 2' and 2' x 4', both 1.5" thick. It is gray and features beveled edges similar to the elegant SonoFlat and ELiTE ProPanels.</p>