Usage Tips:for CPAP Machines: Specifically designed to for S9 series, AirSense 10, AirCurve 10, and AirStart series CPAP & BiPAP machines. These ultra-fine filters a seamless fit and function, enhancing your device's performance. Advanced Filtration Technology: Experience the ultimate in air purification. Our CPAP filters are crafted from premium materials that excel in capturing dust and particles, ensuring the air you breathe is exceptionally clean and free from contaminants. User-Friendly Design: Change filters effortlessly with our easy-to-use replacement filters. They are engineered for simplicity, allowing you to replace or dispose of them without hassle. Enjoy a breath of fresh air without any chemical odors or irritants. Cost-Effective Solution: Keep your CPAP machine running efficiently without breaking the bank. Our bulk pack offers significant savings, providing you with a long-term supply of quality filters, so you never have to worry about running out unexpectedly. Enhanced Breathing Comfort: Breathe easier and sleep better with our high-quality CPAP filters. They not only filter out dust and but also contribute to a healthier breathing environment, making your rest more comfortable and rejuvenating. (The actual product may have slight color difference or difference, which not affect the use) Color: White Material: cotton Package Contents: 40 * filter 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.