Wall sound-absorbing cotton, indoor sound-absorbing cotton, bedroom, living room, acoustic panel, thickness: 3.5CM (gray) (yellow)

Acoustic Panel: High quality sound absorbing panel with excellent acoustic performance in many frequency ranges, easy to install and easy to use. Acoustic Panel: Sound absorption, sound insulation, high quality materials, sound insulation design, noise reduction, easy installation, soundproofing and environmental protection. Acoustic Panel: Use professional acoustic control to reduce waves, reverberation and tremors in small and medium rooms. Acoustic Panel: Tips: This product is not sticky. After the customer receives the package, they need to buy glue to install it. Installation is simple and convenient. Acoustic Panel: Color: Purple, Red, Yellow, Black, Blue, Gray // Size: 2 * 1.5M // Quantity: 3 // Area: 9 square meters // Thickness: 3.5CM;