Professional Sound Absorbing Properties - Acoustic foam panels are installed to reduce noise pollution.They effectively reduce reverb, flutter echoes, undesirable acoustic reflections, unwanted noises. Acoustic foam panels are used to control the reverberation sounds make and this is quite different from soundproofing. it can reduce the echo in the room, improve the sound quality and stereo imaging. | Self-Adhesive - The sound-proof foam panel has a self-adhesive tab covering the entire back that can easily stick to any surface. No special tools or materials are needed for installation. Easy to shape and cut to size, altering won't affect performance. | Easy to Install - 1. The sound-proof foam is compressed under vacuum during transportation, restore to its real thickness by soaking in water for 3-5 minutes, pressing the acoustic foam several times, squeezing out water, and then ventilating for 48-72 hours to dry. 2. Peel off the self-adhesive back and stick to any clean surface easily. | High-Density Flame-Retardant Material - 24 pack/set, each piece is 12 X 12 X 2 inches thick. The soundproof wall panels made up of High-density polyurethane foam at 50/lbs per cubic yard. 2 inches thick, 25% more dense than competing products. It can provide moderate sound control on walls or ceilings. The sound-proof foam is fire retardant, stop fire from spreading. Keep you safe. | Wide Use - Our Acoustic Foam Panels is suitable for sound processing in various occasions. Great for spot treating sound on walls in your studio or office, Recording Studios, Home Offices, Home Entertainment, conference rooms.