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The 3M 66-4710G2 is the correct replacement for the following:
The 3M CUNO RO Membrane Module 66-4710G2 is a reverse osmosis (RO) membrane water filter. This water factory membrane filter is used with other filters in the 3M CMTRO-75 RO system, and is not intended to be used as a stand alone filter.
The 3M 66-4710G2 specifications: