Twelve Pieces Of 2" X 12" X 12" Acoustic Foam Panels, Sound-Absorbing Wall ?Upgraded 2inch Thickened Sound Proof Foam Panels?Come in a vacuum sealed bag with 12pcs 12 x 12 x 2 inch high-density acoustic treatment foam, which covers 12 sq ft totally. Each tile covers 1 sq ft of 2 inch thickness at its highest point. 2inch thickness is better noise and echo reduction. ?High-density Flame-retardant Material?The acoustic foam panels are made of flame-retardant and environmentally friendly polyurethane foam, fire-proofed and will not cause any harm to our body. 25kg/cbm high-density soundproof foam is designed for sound absorption and isolation. ?Unique Pyramid 3D Design?Distinct acoustic design pyramid-shaped soundproof wall panels, improving your audio quality instantly by reducing background noise and echo while recording your voice overs, music, interviews, podcasts, or YouTube videos. ?Widely Uses?These acoustic panels are ideal for absorbing flutter echoes, standing waves and reverberation or unwanted medium-to-high frequencies of sound. Widely used in home or professional studio, home theater, control room, musical instrument studio, ktv, bar, vocal booth, church, meeting room, podcast studio, etc ?Easy to Install?Open the Vacuum package, keep the acoustic panel for 48 hours to restore normal shape. Coming with self-adhesive, just tear off it and stick it on the sponge, please noted that press firmly after sticking to the wall to prevent falling off.