Acoustic Panels - 48 Pack, Studio Soundproofing Foam Wedge Tiles, Ideal for Home Studio Sound Insulation Absorbing Feature: - Good for studios, recording studios, vocal booths, control rooms. - Used to absorb mid to high range frequencies and diminish echoes. Overall Noise Reduction Coefficien - Foam tiles perfectly aligned, professional sound quality. - Compress the packaging. Open the package for quick recovery. - Two colors, total 48pcs, sufficient to meet your needs. Specification: Color: 24pcs Black + 24pcs Purple Material: Polyurethane Size: 30 X 30 X 2.5cm/11.81 X 11.81 X 0.98" Packing: OPP Bag Compression Packing Weight: 960g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement.