[Easy To Install]-Adhesive Design, with glue on the back, easy to install on walls, ceilings, and walls. Suitable for smooth surfaces. You 't need to prepare extra adhesives or to fix it on. [Both Aesthetics and Functionality]The panel has been specifically developed for those situations where acoustic absorption and greater visual are required, such as office, meeting room, home office, dining room, and recording studios, Podcasting Booths, Offices, and more. By deadening unwanted sounds like echoes and noise, you can much clearer sounds. [What's the Effect]Tiles are an easy, elegant acoustic fix for nearly any space. Thanks to the high density, the tiles are great for reducing background noise, echoes, reverberation time(RT), and decrease standing waves, improves speech intelligibility, and help increase sound in a room or space. [Specification]High Density - 200kg/; Dimensions - 12 x 12 x 0.4 inches (30 x 30 x 0.9 cm), pack of 12, covering 12 square feet; Weight - 3.3 pounds of 12 pieces; [Why Acoustics are Important]It's no excessive noise and poor acoustics can have a detrimental effect on productivity, communication, and concentration. To solve this problem, please the right amount of tiles and wall covering areas to create a suitable and comfortable acoustic environment for you, your work partners, and your . Colour:black Material:Polyurethane Size:30 x 30 x 1cm Contents: 12 x Acoustic Foam Panels Only the above content, other are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.