ResMed AirFit F40 Full Face CPAP Mask Headgear replacement headgear is only compatible with AirFit F40 CPAP Masks. Replace your headgear at regular intervals to ensure a good fit and mask seal for the most beneficial therapy.
Large Ref: 64635, Standard Ref: 64634, Small Ref: 64634

Very good headgear, last about 8 months
Also, very good service from Jeremy, the owner!