Professional studio level acoustic treatment, create a beautiful recording environment! | It can be used as acoustical cover for walls, Ceilings and Doors, Acoustical cover for theatres, Cinemas, recording studios, Gyms, Subways, Stations, offices, Schools and other places. | This product is ideal for sound recording and video recording. Effective sound insulation for standing waves and fluttering echoes, especially when used together with our corner bass traps and corner blocks. | It also reduces back panels and room rings when used in medium sized areas such as isolation rooms, recording studios, control rooms and recording studios. For decorative or professional applications. This foam is ideal for on-site processing production studios, practice rooms or home entertainment centers.In addition, this foam helps to minimize irritation echo complications. | After-sales Service Guarantee: Our customers can trust that if you are not satisfied for any reason, you can get a worry-free refund or replacement.