Product Name：Acoustic Fiberboard Description：Acoustic fiber board is a high-performance sound-absorbing material designed to create an ideal acoustic environment. Product material: PET fiber Size: 10x12 inch (30x26cm) Product thickness: 0.4 inch (0.9cm) Product color: white/black Product density: 9.85lb/ft3 Noise reduction coefficient: 0.95 Suitable for a variety of scenarios, including but not limited to: Home audio/video room: Enhance the home audio/video experience, eliminate echo and reverberation, and create an immersive audio environment. Professional recording studios: Optimize sound recording quality, reduce noise and echo, and ensure professional-grade audio recording. Office spaces: Reduces noise distractions and improves work efficiency and concentration. Music studios and rehearsal rooms: Improve music creation and rehearsal environments, enhancing musical quality and detail. Instructions for use and installation: Installing the acoustic fiberboard is very simple. Each fiberboard comes with an adhesive glue layer on the back, simply peel off the protective layer and stick it firmly to the wall or ceiling. You can also use a knife to easily cut the panels into the desired shapes and sizes to meet individual decorative needs. A detailed installation guide will be included with the product to ensure you can install it easily and get the best results. After-sales service and warranty: We provide perfect after-sales service and guarantee for our customers. If you encounter any quality problems or difficulties after purchase, our customer service team is always ready to answer your questions and provide technical support. Whether it's a question about product installation, use or maintenance, we'll do our best to help you.