EASY INSTALLATION - If you're familiar with our acoustic foam, you know how easy it is to install. The back is coated with adhesive, making it simple to attach to a variety of surfaces. No special tools or materials are needed for installation... the simple yet essential design reduces your workload. SIGNIFICANT SOUND INSULATION - Based on our testing, these acoustic panels effectively reduce noise and provide a comfortable environment. Whether your neighbors are noisy, you can read books peacefully at home. Plus, you won't disturb others when gaming at high volumes, as the acoustic panel helps significantly. ELIMINATES ECHOES AND STANDING WAVES - The high-density material with its particle design effectively absorbs sound and dampens echoes. Whether you're watching TV at home, playing the piano, or dancing in your workout room, the sound control panel will effectively reduce noise and provide the right environment for study and relaxation. INFLAMMABLE AND FLAME RETARDANT - You might wonder about the safety of these acoustic panels. Rest assured, they are made from eco-friendly materials that are healthy and ecological. We specifically use a lighter to flame the acoustic panel to ensure the material is non-flammable and has no irritating odor, allowing for safe use. WIDE RANGE OF APPLICATIONS: The soundproof foam boards are an affordable solution for achieving better recordings at home or in the studio. They are used for professional studios, rehearsal rooms, concerts, podcasting, churches, home theaters, vocal booths, homes, etc. Note: With adhesive, the color of the adhesive is random, you cannot choose to specify. Size: 30x30x3.5cm Material: Polyurethane Color: Black Package Contents: 12 x Soundproof Foam Only the above package content is included, other products are not. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.