18 Pack Acoustic Wall Panels 11.8 x 11.8 x 0.4 inch Self-Adhesive Black

18 Pack Acoustic Panels with Self Adhesive, 11.8 x 11.8 x 0.4 inch Sound Proof Foam Panels, Polyester Fiber Soundproof Wall Panels High Density, for Home, Studio, Office, Theater, Black Silent Space Multifunctional Uses Secure Materials Easy & Quick Installation Multiple Color Options Aesthetic & Practical Pattern: Diamond Grid,Set Quantity: 18 pcs,Color: Black,Item Model Number: LYPB180303,Material Grade: E0,Item Dimensions (Single Piece): 300 x 300 x 10 mm / 11.81 x 11.81 x 0.39 inches,Net Weight: 3.08 kg / 6.79 lbs,NRC: 0.85,Main Material: Polyester Fiber,Back Adhesive: 3M, Self-adhesive