Features: Acoustic Foam Features 1: Acoustic Sponge Features 2: Studio Acoustic Foam Features 3: Acoustic Esponja Features 4: Soundproof Foam Features 5: Sound Proof Foam Panels Features 6: Acoustic Treatment Features 7: Soundproofing Foam Features 8: Wall Soundproofing Features 9: Sound Proof Wall Panels Features 10: Acoustic Insulation Brand Name: TOUO Model Number: Pyramid Acoustic Foam Panels Size: 30x30x3/5/7.5cm/12"x12"x1.18/2/3" Material: Polyurethane High-concerned chemical: Urethane (Ethyl carbamate) Density: 12 kg/m³ 20 kg/m³ Origin: Mainland China is_customized: Yes Certification: CE Type: Sealing Strips Choice: yes semi_Choice: yes