Usage Tips:[material] The sound insulation board is made of high-density polyurethane material, -retardant environmental protection material, effective sound insulation and made of fire-proof, to practical safety, is a safe and product. There is no need to worry about product deformation due to long-term compression. They can be immersed in water for a period of time and then air-dried to their state. You can use it safely. [Widely used] This soundproof foam board can be used for on-site treatment of professional or home recording studios, commercial or home offices, rehearsal spaces or home theaters. It is suitable for recording studios, vocal kiosks, control rooms, and also suitable theaters. Professional cinemas, concert , etc. [Fashionable appearance] This acoustic foam panel is designed as a unique triangle, which can not only unnecessary sounds, also play a role in decorative walls. Easy to shape and cut, adjustment will not affect performance. [Easy to install] They can be used as acoustic covers for walls, ceilings and doors, just use , nails, screws, nails, nails, double-sided tape or glue to connect. Remarks: No adhesives. [Coverage area] 24 pieces can cover 24 square feet-each tile is 0.6 square feet, a of 1 inch thick acoustic slope heel. With compressed packaging. Note-When using stickers, make that the wall is flat and free of foreign objects such as powder, which will affect the paste effect. If your walls are rough, we recommend that you use soundproof foam spray adhesive. (Excluding stickers) Colour: blue Material: polyurethane Size: 30x30x2.5cm Package Contents: 24 * Acoustic Panels Only the above package content, other products are not included. Note: Light reflection 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.