I just came across this mask, which I was issued at my sleep study August 2021. I soon switched to a different mask. I don't want to throw this one away if someone wants it. I ask $5 for postage. Since I got it at my sleep study, it's marked "not for sale - sleep lab mask."
I see what my insurance pays for the masks I use now, so thought this might save someone some $.
Happy to post a picture If someone can tell me how! I've tried without success. Clicking the photo icon just inserts this: