for AirSense 11: Designed specifically for the AirSense 11 and AirSense 11 AutoSet machines, these 50 CPAP filters ensure seamless compatibility and a hassle-free replacement experience. High-efficiency filtration: Made from premium cotton, these filters skillfully capture small particles and contaminants, ensuring that only clean, fresh air flows through your CPAP machine, improving your breathing experience. Extended use with optimal performance: Each filter maintains its functionality for up to 15 days, minimizing the need for frequent replacements. Additionally, they help reduce operating noise, promoting a quieter night's rest. User-friendly installation: Easily replace your old filter by opening the filter door, inserting the filter into place, and ensuring the unit is sealed. This simple process keeps your machine running efficiently with minimal effort. Economical and supply: This bulk pack of 50 filters provides a long-lasting supply of over 1.5 years, assuming replacements every two weeks. It is an economical and reliable choice to maintain the performance of your CPAP machine. Color: White Material: Cotton Package Contents: 50 x CPAP Machine Filters Only the above package contents, 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 +/- 1-3 cm.