MATERIAL: Recycled Wood Fiber Residue PANEL SIZE: 2′×4′ or 4′×8′ THICKNESS: 1/2″ Thick DENSITY: 15 to 20 lbs/cubic foot WEIGHT: 0.715 lbs/sf INSULATING VALUE: R = 1.32 at 1/2″ per ASTM C518 NRC: 0.35 per ASTM C423 STC: 26 per ASTM E-90 FLAME SPREAD INDEX: >75 Class III or C) APPLICATIONS: Acousti-Board can be used as a flooring underlayment or as a damping layer between studs and gypsum board to improve Sound Transmission Class (STC) of gypsum drywall partitions. Schools, Apartment Buildings, Townhouses, Condominiums. Noise S.T.O.P. Acousti-Board meets the Requirements of ASTM-C208, the Specification for Cellulosic Fiber Insulating Board.
CAUTION: Noise S.T.O.P. Acousti-Board™ is combustible and may smolder if ignited. Do not expose to flame or prolonged excessive heat above 212°F without sufficient thermal protection or use between layers of noncombustible material. Acousti-Board™ is not a fire rated material.
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