Diffusers in CPAP masks perform the all important function of allowing the partners of CPAP users to sleep peacefully through the night without interruption from a strong stream of exhaled air. The filter cap and set of 10 diffusers included in this package is compatible with the original Fisher and Paykel ESON nasal masks and should be replaced quarterly.
-Contains 10 diffuser foam pieces and plastic filter cap
-Compatible with the original Fisher and Paykel ESON (not ESON 2)
-To be replaced every 2-3 months