Features High density material: the soundproof foam board is made of high quality polyurethane material with high density and is easy to install on the wall. Sound absorption: the acoustic foam can effectively reduce noise pollution, eliminate echoes and background noise by sound absorption. MULTI-PURPOSE - The acoustic foam can be widely used for recording studios, offices, home theaters, games rooms, etc. to improve sound effects. Effective noise reduction: the sound absorbing foam can absorb sound at any frequency, ideal for recording or listening environments. Pyramid design: the pyramid acoustic foam is scientifically designed in pyramid shape, providing better noise reduction effect. Specification: Item Type: Pyramid Acoustic Foam Material: polyurethane. Use: recording studio, drum room, office, factory Basic parameters: Size: approx. 50 x 50 x 10 cm / 19.7 x 19.7 x 3.9 inches. Package list: 1 x Pyramid Acoustic Foam Package List 1 x Pyramid Acoustic Foam