Material: Crafted from ultra-fine fiber cotton, these filters excel in trapping fine particles, dust, and pollen. Free from Bisphenol-A, they safety and reliability for users, enhancing the overall respiratory experience. Superior Filtration Performance: Equipped with HEPA technology, our filters capture minute particles, , viruses, and other airborne contaminants. This advanced filtration significantly boosts the air quality emitted from your machine. Universal Fit: Measuring 2.1" x 1.4", our filters are designed to fit a wide range of machines. They are fully compatible with all S9 series, AirSense 10, AirCurve 10, and AirStart series, ensuring easy replacement and hassle-free maintenance. Enhanced Air Freshness: Each filter is engineered to block fine and large particulate matter, delivering cleaner, fresher air from your machine. This not only improves the air quality but also supports better health and sleep quality for patients. Extended Machine Life: By preventing dust, impurities, and other particles from entering the ventilator, our filters reduce internal wear and tear. This minimizes maintenance costs and extends the lifespan of your equipment. Color: White Material: Fibre Package Contents: 30* 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.