Filter for S9 / AirSense Proper air filtration starts with an air filter on the CPAP machine by catching dust, animal hair and pet dander. Most CPAP machines include a standard disposable filter which should be changed when dirty or after a month. These Disposable Filters fit the ResMed S9™ Series and AirSense™ 10 CPAP Machines. (3PC / Pack)

AirMini Filter These AirMini™ Filters are standard replacement filters for the AirMini™ CPAP Machine - 1PC / Pack. These filters are designed to filter out impurities in the air for sleep apnea therapy. Offering Clean Air for Sleep Apnea Therapy The AirMini™ Filters are designed to filter out dust, dirt, hair, and other impurities in the air. Replace the filters at least every 6 months for optimum machine performance. The filters are disposable and cannot be washed.