About this item REDUCE NOISE: Our 3D acoustically designed 2 inch soundproof wall panels/sound proofing padding for wall helps break up sound waves providing the ideal level of moderate sound control on walls or ceilings. REDUCE REVERB: At 50/lbs per cubic yard, these sound dampening panels effectively absorb unwanted flutter echoes. Made up of non-toxic environmentally friendly polyurethane sound foam padding at 50/lbs per cubic yard. EXPANDS QUICKLY: Our sound proof foam panels come compressed in a vacuum package and quickly recover to normal size, either by placing in a well-ventilated place for about 24-48 hours or soaking the soundproof foam in water for one minute then wringing the water out and using a hair dryer or letting it air/sun dry. PLACE ANYWHERE: Great for spot treating sound on walls in your studio or office - For use in recording studios, control rooms, Offices home studios, home entertainment theaters, Home Offices. Easy to shape and cut to size, altering won't affect performance.