Compatibility: Specifically engineered to fit for for 11 machines, these replacement filters seamless use. Not suitable for 10 or other models, they provide a tailored fit to enhance your device's efficiency.Superior Air Filtration: Crafted from ultra-fine synthetic material, these filters excel in trapping dust, pollen, and other airborne particles, ensuring a cleaner and healthier airflow. This advanced filtration technology helps maintain a clear and safe breathing environment during therapy.Convenient Disposable Design: Designed for ease and efficiency, these filters can be replaced quickly without the need for any tools. Their disposable nature ensures that you can maintain optimal cleanliness and functionality of your machine with minimal effortOptimal Performance Maintenance: To achieve and maintain the highest performance of your for 11 machine, it is advised to replace the filter every 15 days. Regular replacement helps prevent build-up and ensures the and effectiveness of your device.Color: WhiteMaterial: CottonPackage Contents:100 x filterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.