1000 GPD 4 X 21 Reverse Osmosis Membrane (4″ Diameter x 21″ Length)
TRUE Thin Film Composite (TFC) Commercial Reverse Osmosis Membrane.
This model is rated for 1000 Gallons per Day with a stabilized salt rejection of 98.6%.
This will fit a 4 X 21 inch RO Membrane housing such as our Blue Marlin.






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