These are replacement filters for the Resmed S9 series & AirSense 10 series CPAP and Bi-level devices that look like this.
HIGHLY COMPATIBLE AND CONVENIENT – Look no further, the CPAP Filter is the perfect disposable filter kit fitting CPAP Machines from ResMed AirSense 10 and AirCurve 10 to S9 Series.
CLEAN AIR = HEALTHY LIFE – CPAP Filter help keep your lungs clean, while also preventing dust, dirt, bacteria and other build-ups from entering your machine.
Effective filtration of airborne particles and dust. Easy to fit.
Air filters for ResMed CPAP prevent airborne particles and dust from getting into your device so you can enjoy a fresh and healthy therapy experience. The filters are easy to fit and should be replaced every 4-6 months (or whenever the filter is damaged or inoperative).