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The 3M 66-4709G2 is the correct replacement for the following reverse osmosis module:
The 3M CUNO SQC PRO C-80 RO Membrane 66-4709G2 is a reverse osmosis membrane filter that is made of a thin film composite material. (TFC) This replacement membrane will reduce dissolved solids in your water to provide you with fresh, great-tasting drinking water. This water cartridge is for use with chlorinated and unchlorinated water supplies alike.
The 3M 66-4709G2 specifications: