Soundproof Foam Professional Acoustics 4" x 12" x 12" Charcoal Acoustic Pyramid Studio Foam 12 Pack
- Pack of 12. Covers 12 sq. ft.
- For maximum sound absorption.
- Excellent at absorbing low frequency waves.
- Provides maximum deadening capability and functions in the largest areas like gyms or concert halls.
- Overall NRC: 0.65