Soundproof Foam Professional Acoustics Foam Acoustic Foam 12 Pack Room Kit - Wedge 3" 24" X 24" Covers 48sq Ft
12 Pack Special! 3" Thick x 24" x 24" Charcoal Color - Covers 48 sq Ft High NRC Rating of .88 Excellent in the low-mid/mid/high freq's Made in the USA!