12Pcs Hex Head Acoustic Foam Panel Acoustic Panels for Acoustic Treatment, Beveled Edge Tile for Echo Bass Guitar Insulation[Excellent Insulation Sound]: Made of high-density polyester fiber cotton, 300 pounds per cubic meter, better sound insulation than insulation foam! Sound insulation, fireproof, odorless, anti-slip, anti-corrosion and anti-fading. Fireproof Rating: B1-Perform for sound processing site on recording studio walls or offices, suitable for recording studios, control rooms, home office studios, home entertainment theaters, and home offices. [Fashion]: This unique hexagonal sound insulation adopts a chamfered edge design, which can not only absorb unnecessary echoes, but also play a role in the decoration of the wall surface. [Improve Acoustic Quality]: These sound insulation panels are multifunctional and can be used in professional studios, rehearsal rooms, concert halls, podcasts, churches, home theaters, vocal kiosks, home studios, offices, private men's rooms and kennels, sundries closet, etc. By using an absorption panel to eliminate unnecessary sounds, other sounds can be made clearer. [Easy Installation]: Both general adhesive spray and double double-sided tape can be used. Simply stick adhesive spray or double sided tape (not included) on the back of each panel and hold it in the appropriate