12 Pack (12x12x3)" Wedge Foam Acoustic Panel for Soundproofing Studio/Home Theater

12 Pack of (12x12x3) Inch Charcoal Color Acoustical Wedge Foam (Color-Charcoal) for Soundproofing Studio/Home Theater Model 12W-12x12x3 Capable of soundproofing any size room, 3 inch wedge foam is fantastic all-around sound absorbing foam. When used in conjunction with corner bass absorbers and male/female broadband absorbers, it performs even better. Specifications Quantity = 12 Pieces Size = (12 x 12) Inch Thickness = 3 Inches Color = Charcoal Grey Overall NRC: 0.75 Flammability Test Results Class A 25 Flame Spread Index 250 Smoke Spread Index   The overall NRC rating is the calculated average of frequencies 250Hz, 500Hz, 1000Hz and 2000Hz. > 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz Overall 1" Wedge 0.14 0.17 0.36 0.47 0.51 0.61 0.40 2" Wedge 0.20 0.29 0.66 0.80 0.89 1.02 0.65 3" Wedge 0.25 0.47 0.83 0.82 0.92 1.04 0.75 4" Wedge 0.39 0.61 0.91 0.79 0.95 1.03 0.80   Durability: Our foam