Product Description Perfectly Compatible Design: These ultra-fine disposable filters are precisely designed for the AirSense 11 series CPAP machines (including the AirSense 11 Auto-Set). A precise fit ensures easy replacement, maintaining the effectiveness of CPAP therapy. Made with Premium Safe Materials: These filters are made from premium woven synthetic materials, free of chemicals, and safe and reliable. They provide superior performance and optimal air filtration, ensuring your CPAP machine is always operating at its best. Advanced Filtration Technology 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, safely, and enjoy cleaner, fresher air. Easy to Use and Regular Replacement: These filters are designed for easy and quick replacement, supporting continuous CPAP therapy. For optimal performance, it is recommended to replace the filters every two weeks to keep them clean and extend the life of your machine. Color: White Material: Cotton Package Contents: 40 Filters Includes only the above package contents; other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to differ slightly from the actual item. Measurement error is +/- 1-3 cm.