1-Year Compatible Filter Kit with Membrane for RainSoft Ultrafiner II UF22 Reverse Osmosis System

1-Year Filter Replacement Kit with compatible RO Membrane for Rain Soft 21179 and UF22 Reverse Osmosis System INCLUDES: STAGE 1 - 1x Carbon Block Pre Filter Replace Every 12 Months STAGE 2 - 1x RO Membrane TFC 50 GPD Replace Every 24 Months STAGE 3 - 1x Carbon Block Post Filter - Replace Every 12 Months 2) 5micron carbon filters 1) membrane Filters may need to be replaced more often than indicated depending on incoming water contaminant levels and volume of water being treated.