(QFM) Wall Noise Barriers provide up to 21 dBA reduction in ambient noise depending on the noise source.Features a vinyl-coated gray facing cloth quilted to a supporting 2 lb./cu. ft. density fiberglass. Tough, permanent outer shell is resistant to oil, grease and mildew. Easily wiped clean.Attractive metallic gray color enhances area lighting. Complete with brass grommets for easy hanging.Warehouse Safety & Security Rated Class I building material for ASTM E-84 tunnel test for flammability. Also available in white facing, call for details.