I will be starting CPAP therapy shortly and will be using the Resmed Airsense 10 machine. My challenge is the sizing for masks. I have been researching Resmed F20, F30, and the F30i. I am on the cusp for the sizing of each of these masks meaning the F20 as an example measures from the outside of your nostrils and my measurement is 1.5" which is the limit for a small and the start of the range for a medium. For the F30i for the cushion I measure for a small however for the frame I measure at 24 3/8" which again is the limit of a small but the start of the range for the standard.
Any help would be appreciated.
Thanks.