product details:
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)