To block even the smallest of particles, the one-pack of Disposable Standard Filters is made of polyester fibers.
Designed for the AirSense 10 Series of CPAP Machines, the filter is disposable and should be changed every month. This filter is a perfect match for the AirSense 10 Series, AirStart 10 Series, AirCurve 10 Series, and S9 Series CPAP, APAP, and BiPAP Machines.
This is a 3rd party duplication of the standard filter that comes with your S9 Series CPAP Machine.
The AirSense™ 10, AirCurve™ 10, and S9 line of CPAP machines does not use reusable foam and disposable fine filters, like other machines. The standard filter is a fibrous material that wards off large particulate matter like hair or dander.
If you would like additional filtration, we sell an improved Hypoallergenic Filter.