Just did not work for me, got it via my docs sleep office.
Got a mandibular insert that suits me better.

Model is AutoSet

Thanks to bugsby for pointing out the different models

AirSense 11 is the model
S/N 23212471328
Less than 100 hours

2023 ReSMed AirSense11
Usage less than 100 hours. In brand new condition with case, manuals & hose. Includes unopened AirFit N20 mask.
$450 plus shipping