Replacement Filter for Vertex Water Coolers, Reverse Osmosis, RO membrane MA-4203 for Models 400 to 2000

3-stage system uses Standard Filtration (above) plus additional Reverse Osmosis membrane to remove an average of 95% of dissolved minerals and other contaminants.  RO membranes filter at the molecular level equivalent to 0.0001 micron.  Typical useful life is 2-4 years depending on water quality and usage.

RO membrane, 50 GPD for PWC-400, PWC-1000, PWC-1010, PWC-1500, PWC-2000	MA-4203
Encapsulated RO membrane, 75 GPD Standard for PWC-3000	MH-4201
RO membrane, 100 GPD for PWC-7000	MA-4205