Please read description carefully.
Do not base your order on the picture presented.
This is a Long Life Air Inlet Filter which should be used with Devilbiss Pulmo Aide AC Compressor Or Nebulizer (code 5650D) and Devilbiss PulmoMateCompressor or Nebulizer (code 4650D).
The filter should be changed once a month or when the filter turns gray in color.
Medex SKU: DVB-5650D602