General description Our 60 Pieces Acoustic Foam Panels are designed for effective soundproofing and noise reduction in small to medium-sized rooms. Made from high-quality, flame-retardant, and environmentally friendly materials, these soundproofing wedges are safe for use in various settings, including playrooms, studios, and home theaters. The unique design allows for better sound absorption, reducing waves, reverberation, and flutter echoes. Technical specifications Material: Polyurethane Color: Black + White Size: 30 x 30 x 2.5 cm Package Contents: 30 x black soundproofing cotton, 30 x white soundproofing cotton Measurement allowed error: +/- 1-3 cm Installation Stick adhesive on the four corners and the center of the back of the acoustic foam panels, then attach them to the wall. Alternatively, use spray glue for installation based on your preference. Usage To recover the normal size of the acoustic foam, follow these steps: After opening the vacuum package, place the acoustic