ResMed S9 filters standard x 6 pack are also for use with the AirSense10 CPAP machine range. You should always regularly check your ResMed Air 10 CPAP sleep apnea machine filter at the back or side of your sleep machine.
If your not careful what can happen is a build-up of dust can gradually happen over time and then will impede the effectiveness of your CPAP sleep therapy. Also if you live in a dusty environment, or by the sea, you need to replace your ResMed S10 CPAP air filters on a more frequent basis.