Home Decoration Polyester Fiber Sound-Absorbing Board Piano Room Recording Studio Cinema KTV Wall Ceiling Kindergarten Decoration. Drum rooms, piano rooms, instrument rehearsal rooms, recording studios, home theaters, KTV rooms, theaters, studios and live-streaming rooms. Open-plan offices, meeting rooms, training rooms, classrooms, libraries, lecture halls, exhibition halls and government lobbies. Hotel lobby, chain restaurant, coffee shop, gym, swimming pool, shopping mall, parent-child paradise. Equipment rooms, factory control rooms, acoustic laboratories, soundproof rooms, interrogation rooms and command centers. Home theater rooms, studies, children's rooms, villa basements and master bedrooms. High Sound Absorption: NRC 0.8-0.95, reduces reverberation & echoes, improves acoustic clarity. Eco-friendly & Flame Retardant: 100% polyester, formaldehyde-free, B1 fire rating. Customizable: 30+ stock colors, customizable size, thickness & shape. Easy Installation: Adhesive/keel/hanging mounting, fits most flat walls. Durable & Easy Maintenance: Moisture/mildew/impact resistant, wipeable, no deformation.