Precision Compatibility: Specifically engineered to fit for ResMed AirSense 11 CPAP machines, ensuring seamless use. Superior Air Filtration: Crafted from ultra-fine synthetic material, excelling in trapping dust, pollen, and airborne particles. Convenient Disposable Design: Filters can be replaced quickly without tools, maintaining optimal cleanliness with minimal effort. Optimal Performance Maintenance: Recommended replacement every 15 days to prevent build-up and ensure device longevity. These replacement filters are designed to enhance the efficiency of your CPAP machine by providing a tailored fit. The advanced filtration technology ensures a cleaner and healthier airflow, contributing to a safe breathing environment during therapy. Regular maintenance through timely filter replacement is essential for optimal performance and device effectiveness. Color: As Shown Material: Cotton Package Contents: 120*filter