Designed for Perfect Compatibility: These ultra-fine filters are precision engineered for Airsense 11 series CPAP machines, including the AirSense 11 autoset. The precise fit ensures hassle-free replacement and maintains the effectiveness of your CPAP therapy. Engineered with premium safety materials: Made from superior woven synthetic material, these filters are chemical-free and safe. They provide exceptional performance and optimal air filtration, ensuring your CPAP machine operates optimally. Advanced Filtration for Cleaner Air: Effectively captures fine particles, dust, pet dander, and other airborne irritants. These filters improve your breathing environment, allowing you to breathe more comfortably and safely with cleaner, fresher air. Easy to Use and Regular Replacement: These filters are designed for quick and easy use and replacement, supporting consistent CPAP therapy. For optimal performance, replace the filters every two weeks to maintain cleanliness and extend the life of the machine. Color: White Material: cotton Package Contents: 40 * 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.