[Easy to Install] Self-adhesive design with adhesive on the back, easy to install on walls, ceilings and walls. Suitable for all kinds of smooth surfaces. You don't need to prepare additional adhesive or tools to secure it. [Aesthetics and Functionality] This panel is developed for situations where sound absorption and higher visual complexity are required, such as offices, conference rooms, home offices, restaurants, recording studios, podcast booths, offices, etc. By eliminating unwanted sounds like echo and noise, you get clearer sound. [Effect] Ceramic tiles are a simple, elegant acoustic fix that works in almost any space. Due to their high density, ceramic tiles are ideal for reducing background noise, echo, reverberation time (RT), and reducing standing waves, improving speech intelligibility and helping to improve sound clarity in a room or space. [Specifications] High Density - 200kg/cubic meter; Dimensions - 12 x 12 x 04 inches (30 x 30 x 09 cm), 12 pieces per pack, 12 square feet; Weight - 33 lbs for 12 pieces; [Why Acoustics Are So Good IMPORTANT] There is no doubt that excessive noise and poor acoustics can adversely affect productivity, communication and concentration. To combat this, choose the right amount of tile and wall covering area to create a suitable, comfortable acoustic environment for you, your work partners and your family. Color: Black Material: Polyurethane Size: 30 x 30 x 1cm Package Contents: 12 x Acoustic Foam Boards Only the above package contents are included, other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowance is +/-1-3cm.