General description Our 36 Pieces Acoustic Foam Panels are designed for effective soundproofing in small to medium-sized rooms. Made from high-quality, flame-retardant, and environmentally friendly materials, these soundproofing wedges help reduce sound waves, reverberation, and flutter echoes, making them ideal for playrooms, studios, and home theaters. Technical specifications Dimensions: 30 x 30 x 2.5 cm Material: Polyurethane Color: Black + White Package Contents: 18 x black soundproofing cotton, 18 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 Ideal for professional studios, rehearsal rooms, concert halls, podcasting, churches, home theaters, and vocal booths. For maintenance, simply vacuum and dust the panels occasionally. Other information To