Philips Respironics Disposable Ultrafine Filter for M-Series, 6 Pack1029331
The filters are disposable and are not meant for cleaning! If you happen to get the filter wet, dispose of it and use a new filter. These filters are meant to be replaced every 1-2 months depending on the need for replacement. You will typically see the filter change from white to slightly grey or even black. It is extremely important to change this filter and should be considered as important as your Home Furnace filter! Lack of cleaning of the pollen filter and switching of an Ultra Fine Filter could cause your CPAP or Bi-PAP machine to overwork and eventually fail!
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