ResMed AirFit F30 full face mask, CPAP Masks Bangladesh. AirFit F30 is a smaller style full face mask. It’s designed to cover less of your face for fewer facial marks when you wake up in the morning. AirFit F30 is a minimal-contact full face mask, which means the cushion rests under your nose rather than over it. This gives it a modern look and prevents discomfort on the top of your nose.