General description Our 24 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 panels ensure safety while providing excellent sound absorption. They help reduce waves, reverberation, and flutter echoes, making them ideal for professional studios, rehearsal rooms, concert halls, podcasting, churches, home theaters, and vocal booths. Technical specifications Dimensions: 30 x 30 x 2.5 cm Material: Polyurethane Color: Black + White Package Contents: 12 x black soundproofing cotton, 12 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, place it in a ventilated