1. Pyramid 3D acoustic design: 2-inch pyramid foam can provide moderate sound control on the wall or ceiling. Through acoustic control, sound absorption, acoustic processing, noise reduction, acoustic foam can reduce fluctuations, reverberation and flutter in small and medium-sized rooms. 2. Safety and environmental protection: The sound-absorbing panel is environmentally friendly, which not only has effective sound absorption properties, but also does not cause any harm to the human body. 3. Widely used: very suitable for on-site sound treatment on the walls of studios or offices - suitable for recording studios, control rooms, office home studios, home theaters, home offices. Easy to shape and cut to size, changes do not affect performance. 4. Easy to clean: high-quality studio foam can permanently maintain its sound insulation function. In terms of cleaning, you only need to vacuum and dust it from time to time. 5. The sound insulation board is most suitable for sound treatment. It is made of high-density flame retardant material, which can more effectively isolate the sound and create a good recording environment. Item No.: Triangular slot shape: surface uneven color: Black Material: foam size: 30 x 30 x 5CM Package Contents: 12 x Studio Foam Only the above package contents, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.