Acoustic Screen Width 4 ft Length 8 ft Thickness 1 in Color Gray Noise Reduction Coefficient (NRC) 0.75 Material Acoustical Curtain Laminated With Reinforced Mass Loaded Vinyl Barrier Snap Lock Tubular Steel Frame Temp Range -10 Degrees to 120 Degrees F Resistant To Fuels Grease Lubricants Moisture Solvents Standards ASTM E84 Class I Fire Rating Sound Transmission Class-25 Includes Snap Lock Tubular Steel Frame