Noise Reduction Partition Panel Width 4 ft Thickness 2 in Color Gray Noise Reduction Coefficient (NRC) 0.7 Material Fiberglass Temp Range 180 Degrees F (continuous) +265 Degrees F intermittent Resistant To Grease Mildew Oil Coverage Reduces up to 17 dBa Standards ASTM E84-Class A Fire Rating Includes 1-Panel Strt Track Connectors Rollers