Peel and Stick Acoustic Geometry tiles are quick changes for your space.The Hex tile introduced the world to the simplicity of peel-and-stick acoustic design. The addition of the Oblong, Square, Delta and Penta tile shapes make visually amazing, acoustically calm spaces a snap.SOUND ABSORPTION: ASTM C423-90ANRC: .36WEIGHT: .49lbs/SFFIRE RATING: ASTM E84: Class CVOC EMISSIONS: ASTM D5116 <.02mg/m2/hourINSTALLATION: Peel and Stick