The third generation [self-adhesive] soundproof foam panel is very easy to install, and there is adhesive paper all over the back, which is convenient to fix on the wall and ceiling. No additional tools or materials are required for installation. Tear off the thin paper and paste it. Installation is very simple! [2 inches (about 5.1 cm), better sound absorption] 3D sound absorption foam helps to break sound waves, which is very suitable for people who reduce and absorb unnecessary echo, fluctuation and reverberation, and increase sound clarity. The foam is thicker and the sound absorption effect is better. When playing guitar or piano, you don't have to worry about disturbing others. [Easy to cut] you can use the scissors to cut any size, and the change will not affect the performance. You can use different colors of acoustic foam to make your favorite decorative designs. Make your room more interesting. Therefore, sound insulation foam board is very suitable for wall decoration. Say goodbye to the old wall! [Environmental protection, fire resistance] sound insulation foam is made of environmentally friendly polyurethane foam material, using professional non-toxic and odorless foam. In addition, we add flame retardant formula to the sponge to reduce sudden danger and ensure safety, so you can install it at any time. [Application d