ESPECIALLY PROFESSIONAL DESIGN: Crafted using an updated density 30 kg/m3 meterial to help reduce reverb, undesirable acoustic reflections, flutter echoes and unwanted noises. Our 24 pack bass traps studio foam are specially designed for corner, it's used with acoustic foam panels to cover up the 4 corners of your room.For a better wall decoration, corner blocks are necessary. DAMAGE FREE: You 't have to wrestle with to where they need to go, just attach it with nails, glue or adhesive taps easily without damaging your wall. Our sound proof foam stay on a variety of surfaces tightly because they are and bendable. Easy to shape and cut to size, altering 't affect performance. PROFESSIONAL ACOUSTIC CONTROL: Our studio corner sound foam are made of high density, fire retardant, non-toxic polyurethane foam which is used to eliminat reverb and echoes of bass sounds. To minimize interference and improve sound clarity, our sound proofing foam panels would be the best idea for professional