HEXAGON SHAPED&BEVELED EDGE DESIGN: It is the honey comb design that makes our sound proof foam panels great for wall decoration and acoustic treatment! Crafted using chamfer design, the sound panels bring better protection to your family and friends such as anti-collision, anti-scratch and non-slip. Good looking soundproofing panels play an important role in wall art in your favorite space! IMPROVE SOUND QUALITY: Made from 215kg/m3 high density polyester fiber cotton, our soundproof wall panels do well in reducing noise, eliminating sound impurities and improving speech intelligibility. We on using high quality soundproofing material to it's flame retardant, odorless, resistant, and fade resistant. Furthermore, the acoustic foam panels achieve of noise reduction coefficient: 0.92 and absorption coefficient: 0.8! Good sound absorption characteristics: If you are mixing in a studio, you must reduce the ambient sound. Unnecessary noise during recording will it. The sound-absorbing board can absorb the sound produced by low frequency, middle frequency and high frequency, which is very suitable for recording. EASY TO INSTALL: No special tools or materials are needed! Our perfect cutting sound absorbing panel can be attached to a of surfaces, and thus, you 't have to wrestle with to where they need to go. Please the is clean, dry and free from dust before starting. Then, simply attach the panels with adhesive, adhesive, and nails (not included). WIDE APPLICATIONS: Professional sound dampening panels are great for spot treating sound on walls in your studio or office. Special mixed color soundproofing panels are the to decorate your recording studios, control rooms, offices home studios, home theaters, home offices. It's safe to Press and breath in because the odorless and eco friendly soundproof material. size:Side length 17.5cm Material:Polyester cotton colour:Black+silver gray Package Contents: 8 x Black sound insulation board 8 x Silver gray sound insulation board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.