ROK-4M-75
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4-Stage, 75 GPD Reverse Osmosis Replacement Cartridge Kit with CSM Membrane

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$71.00
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ROK-4M-75 includes the following standard size replacement cartridges for a 4-Stage, 75 GPD Reverse Osmosis System like the one shown below.

4-Stage Reverse Osmosis System

4-Stage Reverse Osmosis System