Heated Humidifier Water Chamber for Luna II Series CPAP & BiPAP Machines 1-of-1833 Because the frame is soft

Because the frame is soft it adapts naturally to facial contours without pinching or pressure points

Three sizes -- Small

It is compatible with all H4i Heated Humidifiers as well as HumidAire 3i (H3i) Heated Humidifiers that have been upgraded using the H4i Flip-Top Lid with Seal (Part 26953) or the H3i-to-H4i Upgrade Kit

and it allows the machine to be used without engaging the built-in HumidAir Humidifier

ResMed's fourth generation Mirage Quattro provides superior seal and personalized comfort in a streamlined design that looks sleek and feels ultra light on the face

Heated Humidifier Water Chamber for Luna II Series CPAP & BiPAP Machines 1-of-1833 Because the frame is softThis Humidifier Water Chamber is designed for use with all Luna II and Luna II QX CPAP Machines. It can be removed and opened for cleaning and filling.