Pyle 24 Pack - Acoustic Studio Soundproofing Foam Wedges Wall Panels, 12'' X 12'' Squares, 2'' Thick. (PSI18) Includes (24) Pieces of Acoustic Studio Foam Paneling - 'Wedgie' Style Sound Absorption Helps Promote the Flow of 'Clean' Speaker Sound Projection, Stabilizes & Isolates Reduces Vibration & Unwanted Audio Resonance, Effectively Absorbs Bass Recoil 2'' inch Thick Engineered Noise-Reducing Foam - Helps Achieve Optimal Audio Performance Recording Environments & In-Studio Use Charcoal Gray, Size (L x W x H): 12.0'' x 12.0'' x 2.0''