12pcs Acoustic Foam, Self-Adhesive Sound-Proof Foam Board, Reduce Foam Noise, for Music Studio, etc, 5X30X30cm[Self-Adhesive] Sound-Proof Foam Panel has its own adhesive label that covers the entire back and can be easily attached to any surface. No special tools or materials are required for installation. Easy to shape and cut, the modification will not affect the performance. [Professional sound-absorbing performance] sound insulation foam panels are installed to reduce noise. They can effectively reduce reverberation, floating echo, unwanted acoustic reflections, and unnecessary noise. Sound insulation foam panel is used to control the sound of reverberation, which is quite different from sound insulation. It can eliminate echo in the room, improve sound quality and stereo imaging. [Easy to install] when transporting, compress the acoustic foam under vacuum and place it in a well-ventilated area for about 24-72 hours to quickly return to normal size. If some of the foam sound insulation does not recover, just dry them in water and they will develop completely (remember to ventilate and dry 24-4 8 hours before installation, and then the water will not hurt the glue). [High Density Fireproof Material] This soundproof wall panel is made of high density polyurethane foam, 50/lb per cubic meter. The thickness is 2 inches (about 5.1 cm), which is 25% higher