Acoustic Foam Panels-11.8X6.8X2 Inch 6 Pack Thick Dense Echo Suppressor for Home Office Echo Absorption [Specifications]: Coverage-5.72 Square Feet; Weight-per piece-20 kg/msup2;; Bevel hexagonal head design. [Excellent Acoustic Performance]: acoustic foam panels are dense and thick open-cell foam, ideal for eliminating room reverberation/echo/standing waves/noise, improving the clarity of sound in space; High NC (Noise Reduction Ratio): 0.75. [Scope of Application]: these sound-absorbing foam are ideal for acoustic therapy; Suitable for recording studios, home theaters, offices, home studios, vocal booths, basements, podcasts, YouTube, etc. [Suitable for indoor use]: eco-friendly; These modern wave style foam boards are perfect for decorating walls and ceiling. [Easy to Cut and Set]: Soft and flexible sound-absorbing foam is easy to cut and install. Spray glue works well (does not contain spray glue). Color: BlueMaterial: Polyurethane Size: 30x17.5x5cmPackage Contents:6*Sound-Absorbing Foam PanelsOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.