sound proof foam panels adopt a novel pyramids design and high-density polyethylene foam material. The contact area between the acoustic panels and the sound wave is increased offer unmatched sound performance, which can effectively reduce flutter , reverberation, standing wave and high-frequency noise. Experience the difference with our acoustic foam perfect for various sound treatment needs, the more panels you use, the better the overall effect. soundproof wall panels, you don't need to buy additional spray glue and double-sided tape. Our sound proof panels comes with a self-adhesive layer, tear off the kraft paper on the back and at will. The strong and long-lasting adhesive keeps the soundproof foam firmly fixed . At the same time, we also provided some additional double-sided tapes for free in case of any special situation. Easy to install, don't worry about falling off. 2inch x 24inch x 12inch sound panels is larger and thicker than traditional 1inch x 12inch x 12inch soundproof panels, making it easier to install and reducing the risk of Space or unsightly seams caused by installation errors. Our soundproof foam with a pyramid 3D acoustic design, it effectively enhances sound insulation and reduces external noise. Sound dampening panels is Perfect for homes or studios, helping to reduce reverberation, vibration , and unnecessary reflections. sound absorbing panel is made of super high resilience PU sponge polymer material instantly pressed by dozens of high temperature new technology. It is full of elasticity and toughness, it will quickly expand and return to its old shape within 5 seconds after opening the package. No need to soak and wait. Our acoustic foam panels perfect for professional studios, video bloggers, home theaters, rehearsal rooms, concert , podcasting, offices, etc. With adhesive backing, the color of the adhesive backing is random and cannot be specified. Colour:Black Material:polyurethane Size:About 30x60x5cm Package Contents: 12 x Acoustic Foam Panels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.