Feature: 1. The pyramidal acoustic sponge has a beautiful shape, which can be installed on the wall or ceiling to provide moderate sound control. 2. With good acoustic characteristics, professional sound control, sound suppression, acoustic treatment, noise reduction. 3. It can effectively eliminate reverberation echo, reduce noise transmission, and is suitable for indoor sound absorption processing and indoor sound insulation. 4. Made of high quality polyurethane material, it is environmentally friendly, durable and flame retardant. 5. High density, excellent performance, very suitable for your studio, studio, home theater. Specification: Condition: 100% Brand New Item Type: Soundproofing Foam Material: PU Color: Black, Gray (Optional) Weight: Approx. 365g / 12.9oz Size: Approx. 30x30x5cm / 11.8x11.8x2.0in Package List: 6 x Soundproofing Foam Note: 1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.