Check the listing for details. 12~96PACK 12"X12"X2" Pyramid Acoustic Foam Panel Studio Soundproof Wall Tile. Color: Black, Condition: New. Listed at 36.79 USD. for absorbing flutter echoes, standing waves and reverberation or unwanted medium-to-high frequencies of sound. Widely used in home or professional studio, home theater, control room, musical instrument studio, ktv, bar, vocal booth, church, meeting room, podcast studio, etc. 【Specification】12 pack of 12 x 12 x 2 inches black pyramid-shaped black sound foam panels are included in the package which covers 12 sq ft totally. Each tile covers 1 sq ft of 2 inch thickness at its highest point. 【Rapid Expansion】The package is vacuum sealed for shipping. The first glance you see the foam is of deformation, but pls do not worry about this. Just unpack the package in time and put them in a well ventilated place for 24-48 hours to restore normal shape.