Description: 1. 100pcs bag, 100% high quality non-woven fabric. 2. Perfectly fitted screen measures 53*35mm, exactly matching your machine. 3. Compatible with various CPAP machines, suitable for AirSense 10 and AirCurve 10 to S9 CPAP 4. Ultra-fine PM2.5 ultra-clean air dust filter cotton, which can effectively filter extremely fine dust particles (PM2.5 level) in the air, allowing you to get clean air and improve air quality when using the fan. Brand new and high quality. Disposable ultra-fine filter blocks fine particles. Effectively filters PM2.5 fine particle dust in the air. White filter cotton is recommended to replace 1-2 pieces in 1 month. Not only helps you keep your lungs clean, but also prevents dust, dirt and other substances. Specifications: Color: White. Material: Non-woven Size: about 53 x 35mm Package Contents: 100 * Filter Membrane />Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the