Wellco 0.4 in. x 9 in. x 9 in. Fabric Square Self-Adhesive Sound Absorbing Acoustic Panels in White (12-Pack)

Our acoustic panels are made from high-density 100% polyester for better sound insulation. The adhesive on the back is sticky, just peel off the protective film on the back and stick it where you need it. The coverage area is larger and the noise reduction effect is more obvious.