12 Pack Acoustic Foam Panels, Self Adhesive Soundproof Foam Panels, For Wall Decoration, Music Studio Home Bedroom, 5X30X30cm[Self Adhesive] Sound Foam Panel has a self-adhesive tab covering the entire back, which can be easily stuck to any surface. No special tools or materials are needed for installation. Easy to shape and cut to size, the change will not affect the performance. [Professional Sound-Absorbing Properties] acoustic foam panels are installed to reduce noise pollution. Effectively reduce reverberation, echo flutter, unwanted acoustic reflections, unwanted noises. Acoustic foam panels are used to control reverberation sounds, and this is quite different from sound insulation. It can eliminate echo in the room, improve sound quality and stereo imaging. [Easy to install] soundproof foams are compressed in a vacuum during transportation and quickly recover to normal size by being placed in a well-ventilated area for about 24-72 hours. If some acoustic foams have not been restored, just dry them in water and they will develop completely, (Be sure to ventilate to dry for 24-48 hours before installation, then the water does not hurt the glue). [High Density Fire Retardant Material] soundproof wall panels made of high density polyurethane foam at 50/lbs per cubic meter. 2 inches thick, 25% more dense