Why is are there no F20 mask liners?

These will cover an F20. Having to cut the hole yourself is a pain and so is trying to line it up again after washing. These also itch. Sleep Restfully makes liners (Large size) that fit an F20 great but they are pricey at $25 a month.

Do these cause your scores to change on my air? i am still getting pretty high scores but showing more air leaks even though i feel it is doing well

These liners cause a lot of air leakage which I could not withstand. Only tried it one minute and threw the damn things out. I was using an older mask that I had to crank down so tight to avoid leakages that it left deep impressions for hours in the morning. Then I got a Resmed Mirage Quattro, which is absolutely fabulous. It is very important you get the right size mask and cushion. Mine leaves no marks on my face and you can dial lighter or heavier mask pressure on your face and nose. There are many manufacturers and models of masks out there. Unfortunately very very few truly knowledgeable medical helpers on the market.

anyone know what the return policy is?

All I can tell you is Amazon is amazing with their return policy. I don't know exactly how their return policy reads but I've returned items to them and it was very easy.

resplabs CPAP Mask Liners - Compatible with ResMed AirFit and AirTouch F20 Full Face Masks - Reusable, Washable Comfort Covers - 4 Pack (Universal Fit)

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