Features:-If you are looking for the perfect disposable CPAP air filters for any of your CPAP Machines from AirSense 10 and AirCurve 10 to S9 Series CPAP, then you have landed the perfect place Dont hesitate and buy these filters-Each filter is a combination of material engineered to block fine particles and large particulate matter, so you can breathe easy.-Our filters are designed so as to provide you and your loved ones with the cleanest air to maintain the health of your lungs and keep the potential diseases away from you-Just to be given 1 or 2 filters a month. Order 20 filters and be able to change them frequently to live a healthy safe life styleSize: 5.3 x 3.5cmThickness:1.5mmMaterial:100% natural cottonPackage Includes:10/20/50/100Pcs Universal Replacement Filters