More documentation How do I fit my AirFit N20 Classic mask? How do I assemble/disassemble my AirFit N20 Classic mask? How do I clean my AirFit N20 Classic mask? Keep exploring How and when to replace my mask? To maintain good quality therapy and enjoy a comfortable experience, it’s important to replace your mask and its components regularly. Explore Where to find ResMed sleep clinics in the UK? Need to meet us? Find our different localisation in UK. Explore Track your CPAP therapy with myAir Track your sleep therapy progress from the palm of your hand with the myAir online support programme. It’s included with any ResMed Air10 device. Explore Related products AirFit N20 Fits 99.4% of faces worldwide Read more AirFit N30 A small and quiet CPAP mask that’s designed to be comfortable and easy to use Read more AirFit N30i Tube-up design gives patients the freedom to sleep in any position Read more