Acoustic Panel Grid 70mm Laminated Oak Reduces echo & reverb resulting in a more clean transparent sound Ideal for recording studios, home theaters, music rooms, office environments, rehearsal rooms, auditoriums, conference rooms, etc. Special microporous structure of the acoustic foam transforms the sound energy into thermal energy 3D surface partially scatter the reflected sound High density 70mm acoustic foam Available in many beautiful finishes and colours for the perfect interior design Easy to mount/install Functionality - Absorption and Diffusion Material - Laminated MDF and Foam (type M1) Absorption Frequency - Medium Frequencies Size - 500x500mm / (20x20inches) Fire Class - Euroclass E Thickness - 70 mm Overall NRC - 0.65 Weight - 0.85 kg