Noise-Dampening Sound Insulation For Home Ceilings, Heavyoff 12 Pack Acoustic ?High Density?The sound insulation board is made of High density polyurethane material flame retardant materials. High-density materials its tiny particles design which are effective to absorb noise and eliminate echoes. ?Noise Reduction Fireproof?Soundproof foam are made from fireproof, high quality material, will help reduce sounds and allow you to practice any musical instrument, watch movies, play games or listen to music without disturbing anyone. ?Fashionable?This Acoustic Foam Panels is designed as unique pyramid, which can not only absorb unnecessary sound, but also play a role in decorating the wall surface.Easy to shape and cut to size, altering won?t affect performance. ?Easy to Install?12 Pack Covers 12 Square Feet. When use stickers, please make sure the wall is flat and free of foreign matter such as powder, which will affect the effect of the paste. If your wall is rough, we recommend that you use acoustic foam spray adhesive. NOTE: Stickers and acoustic foam spray adhesive are not included. ?Great Soundproofing Solutions? The acoustic treatment panels are great for spot treating walls in professional or home recording studios!They are widely used in broadcast booths,commercial or home office,music production museums,concert halls,karaoke room,professional movie theaters,home entertainment theaters,control rooms,auditoriums,rehearsal space,lecture.