WHY CHOOSE RUONIN.X? Our Art Acoustic Panels have the following properties that you cannot refuse: Superior sound absorption Variety of decorative options Comfortable thermal insulation Safe flame retardancy Healthy environmental protection Lightweight and easy to install Stable and does not fade Impact resistance Specification information Size: 72 X 48 X 0.4 inches 100% polyester fiber 229kg/m3 high density The main scope of application: audio-visual equipment testing rooms, recording studios, music rooms, home theaters, theaters, offices, conference rooms, concert halls, classrooms, KTV, hotels, living room home decoration and other places that require high acoustic treatment. Installation method and steps: ? : Before installation, please clean the wall carefully. Make sure that the wall is flat, dry and free of dust. ? :Confirm the direction and position of each panel to ensure the correct combination of patterns. ? : Cut the 3M double-sided tape to a length of about 20-22 inches (note: 3M double-sided tape is not included in our products, you need to prepare it yourself). ?: Stick the cut double-sided tape on the back of the sound-absorbing board and press it lightly. ? : Uncover the protective film of the 3M double-sided tape, paste the sound absorbing Panels to the desired position and press it from the inside to the outside for 5 seconds. Note: If the sound absorbing Panels cannot be installed with 3M double-sided adhesive, you can use 3M spray adhesive instead. (The installation method of 3M spray glue will cause residue on the wall when it is disassembled in the future)