Acoustic Foam Bass Trap Studio Soundproofing Corner Wall 12" x 12" x 12" (8 PACK) Great solution for professionals and hobbyists , Professional, High Quality Durability and Effective Constructed from a high density egg-crate foam material Dampens and diffuses sound waves inside of a room to minimize interference, Increases increasing sound clarity More affordable than competitive products , Corner Wall Foam is used with Wall Panels to cover up the 4 corners of the room For use in home theaters, professional movie theaters, concert halls, gymnasiums sports centers, recording studios, auditoriums and more! Made in USA by Mybecca / CA Technical Bulletin 117-2013 Flammability Standard Compliant