for AirSense 11: Designed specifically for AirSense 11 and AirSense 11 AutoSet machines, these 50 CPAP filters a seamless compatibility and a hassle-free replacement experience. High-Efficiency Filtration: Crafted from premium Cotton, these filters adeptly trap tiny particles and impurities, ensuring only clean and fresh air flows through your CPAP machine, enhancing 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 contribute to reducing operational noise, promoting a quieter restful night. User-Friendly Installation: Effortlessly replace your old filter by opening the filter cover, inserting the filter in place, and ensuring the device is sealed. This straightforward 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 bi-weekly replacements. It's an economical and reliable choice for maintaining your CPAP machine's performance. Color: White Material: Cotton Package Contents: 50 x CPAP machine filters Only 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.