4-piece acoustic panel set: 1.44 square metres- Dimensions (height × width): 60 × 60 centimetres- Thickness: 21 millimetres- Strip width: 27 millimetres- Strip spacing: 13 millimetres- Strip thickness: 12 millimetres- PET board thickness: 9 millimetres1. This set of four acoustic panels is suitable for various wall and ceiling surfaces, effectively enhancing the acoustic performance of rooms or spaces. Their refined decorative finish creates a comfortable ambience while providing a practical solution for optimising environmental acoustics.2. Suitable for every corner of domestic settings, as well as offices, restaurants, entertainment venues, and recording studios. Beyond improving acoustics, these panels cultivate a cosy, welcoming ambience while seamlessly integrating with interior décor.3. Exceptional acoustic performance: An NRC rating of up to 0.7 significantly enhances sound absorption, effectively reducing noise to create a superior acoustic environment.4. It is strongly recommended to maintain a 5mm gap between the panels and the floor to prevent moisture rising through capillary action during deep floor cleaning, thereby avoiding stain formation. Routine maintenance requires only wiping with a dry cloth.5. Installation is straightforward: configuration is quick and intuitive. Panels can be easily secured to walls using screws or adhesive. They can be precisely cut to fit spatial requirements, allowing you to freely customise installation plans to perfectly match individual needs.