Evvmnaks 12 PCS Acoustic Foam Panels Black 12x12x2Inch Wedges Soundproof Foam Panels High Density Foam Fire Resistant Foam

[Fast Expansion] What makes our acoustic foam panels is their quick expansion even after they stay in compressed sealed package for a long time. Usually they puff up immediately when you open the bag, but sometimes may take a bit from a few hours to due to other factors affection. [Flame Retardant Material] Our acoustic foam panels are designed with professional-grade open cell polyurethane foam, passed the environmental protection and flame retardancy test of SGS, for safe and comfortable use. [ Design of Wedge ] wedge design increases the contact area with sound. Performs good in absorbing and eliminating unwanted echoes, flutter echoes, standing waves, reverb. You can harness to create the optimal environment for music recording or peaceful work. [Widely Usage] acoustic soundproofing foam wedges can be used in any room that requires acoustic control or better music recording, perfect for recording studios, vocal rooms, control rooms, and perfect for home theaters, professional cinemas, concert , and more.