High density 50CM/100CM sound absorbing cotton, corner low frequency trap soundproof foam density: 50 density hardened (black 30*30*100CM) (black 30*30*100CM)

This product has flame retardant properties and will self-extinguish when it is away from the fire. Waterproof and moisture-proof. Excellent insulation performance Environmental protection and health, sound insulation, sound absorption, noise reduction. High density flame retardant, long-lasting durability. Decorative wall, reusable Color: Brown, Black Quantity: 1PCS Applicable scenes: drum room, piano room, bar, KTV, bedroom, hotel, opera house, kindergarten, theater, recording studio, conference room, concert hall, etc. Size: 30×30×50cm, 30×30×100cm. Material: sponge.