Quilted Noise Reduction Partition Panel Width 48 in Length 50 ft Thickness 1 in Color Gray Noise Reduction Coefficient (NRC) 0.65 Material Fiberglass Temp Range 160 Degrees F Continuous + 265 Degrees F Intermittent Resistant To Alkalis Dirt Dust Grease Mild Acids Moisture Oils Coverage Reduces Up to 35 dBa Standards ASTM E-84 Includes Double Layer Aluminum Vinyl Coated