[Environmental protection and safety] Made of high-quality environmentally-friendly material, these studio foams are and effective, without health risks, and are safe to use. [Noise Absorption] Our sound foam panels can suppress and diffuse the low and medium sound waves in the room to minimize interference and increase sound clarity. There are 50 packages of these sound insulation foam panels, each tile is 0.6 square feet, 1 inch thick acoustic wedges, and 12 packages cover an area of 0.6 square meters. [Easy to install] These studio sound-absorbing panels can be used as acoustic covers for walls, ceilings and doors, and can be easily fixed with staples, nails, screws, nails or glue. [Widely used] Our sound insulation foam board is very suitable for recording studios, vocal kiosks, control rooms, and also very suitable for home theaters, professional cinemas, concert , etc. colour:Black Material:Polyurethane size:30 x 30 x 2.5cm Package Contents: 50 x Acoustic Foam Panels Only the