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 won't have to wrestle with to get it where they need to go, just attach it with nails, glue or adhesive taps easily without damaging your wall. Our sound proof foam will stay on a variety of surfaces tightly because they are lightweight and bendable. Easy to shape and cut to size, altering won'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 idea for professional acoustic control, acoustic treatment, noise reduction and sound dampening. High quality Materials: Our sound absorbing foam panels crafted from fire-retardant and eco-Friendly material, it is safe to use in small and medium-sized rooms. WIDE APPLICATION: It's no double that you will get better acoustics and the high end style with our cost effective bass traps for studio. Not only great for spot treating sound on walls in your studio but also for recording studios, control rooms, rehearsal rooms, YouTube/podcast recording, vocal booths, home theaters, home offices. Colour:black Material:Polyurethane Size:7.5 x 7.5 x 30cm Package Contents: 24 * Soundproofing Foam Only the above package content, other products are not included. Note: Light shooting 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 +/- 1-3cm.