[Environmental protection material] The sound insulation foam panel is made of environmentally friendly high-density polyurethane foam, which is -retardant and non-toxic. Professional sound-absorbing foam, safe to use. [Widely used] These studio absorption foams are widely used in homes, offices, recording studios, ceilings, cinemas, game rooms, vocal pavilions, and control rooms. Will not interfere with each other! [Easy to install] We are equipped It can be installed on walls, ceilings, doors and windows. No tools are needed and it will not be . You can cut the size according to your needs without affecting performance. [Perfect sound-absorbing performance] For professional recording, video and game live broadcast, these are . Sound insulation foam is used to eliminate reverberation and sound reflection, professional studio-level acoustic treatment, and external noise, so that the audience can hear more clearly. Colour: Black Material: Polyurethane Size: 30x30x2.5cm Package Contents: 24 x black acoustic foam board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.