Rainsoft 21179 Compatible RO Filter Kit with Membrane

1-Year Filter Replacement Kit with RO Membrane for RainSoft 21179 Reverse Osmosis System INCLUDES: STAGE 1 - 1x Carbon Block Pre Filter (OMB934-5M) - Replace Every 12 Months STAGE 2 - 1x RO Membrane TFC 50 GPD (TFC-RS9-50) - Replace every 24 months STAGE 3 - 1x Carbon Block Post Filter (OMB934-1M) - Replace Every 12 Months Note these filters are high-quality replacement filters for the Rainsoft 21179 RO system and not genuine Rainsoft parts. Note: If your Rainsoft reverse osmosis system is from 2013 or newer, it most likely is the Ultrefiner II. The Ultrefiner II requires proprietary filters that must be purchased from a Rainsoft dealer. Conversion kits to generic non-OEM replacement filters are available. *Filters may need to be replaced more often than indicated depending on incoming water contaminant levels and volume of water being treated.