12 Pack of (12x12x4) Inch Acoustical Pyramid Foam Panel for Soundproofing Studio & Home Theater-Charcoal Grey by ShopBox®

12 Pack of (12 x 12 x 4) Inch Charcoal Color Acoustical Pyramid Foam For maximum sound absorption, the 4 inch pyramid foam is the product for the job. Excellent at absorbing low frequency waves, it provides maximum deadening capability and functions in the largest areas, like gyms or concert halls. Specifications Quantity = 12 Pack of Pyramid Acoustic Foam Size = (12 x 12) Inch Thickness = 4 Inches Color = Charcoal Grey Overall NRC: 0.65 Flammability Test Results Class A 25 Flame Spread Index 250 Smoke Spread Index