ArtUSA Acousti-Pyramid™ Panels offer outstanding acoustic control across all frequencies with Noise Reduction Coefficients (NRCs) ranging from 0.75 to 1.05. The unique geometric design of these panels dramatically increases the panels' surface area, providing much more acoustic control than flat surfaces. ArtUSA Acousti-Pyramid Panels are made from ArtUSA Industries' willtec® foam, which is Class 1 fire-rated according to ASTM E 84 for flame spread and smoke density. Willtec natural also meets the corner burn test UL 1715. ArtUSA Acousti-Pyramid Panels, available in either natural or painted willtec, can be easily mounted to any wall or ceiling surface with AcouSTIC™ water-based adhesive. Once installed, the 2'x2' panels come together to make an attractive, seamless pattern.