The Axeon Flexeon RF-4000 series features 4 stages with various gallons pers day available depending on the selected membrane. To find the required membrane for your RF-4000 model, look at the Gallon Per Day (GPD) Flow Rate on the outside of the membrane housing, then select the membrane that most closely matches your listed flow rate.
- STAGE 1 – Sediment Pre-Filter #200621 (Replacement Part#: 93023) – Replace Every 12 Months
- STAGE 2 – Carbon Block Pre-Filter #200658 (Replacement Part#: OMB934-10M) – Replace Every 12 Months
- STAGE 3 – RO Membrane – Replace Every 24 Months Please look at GPD rating on membrane housing of your particular RF-4000 model to find the required membrane:
- STAGE 4 – Carbon GAC Post Filter #200654 (Replacement Part#: CL10ROT33-BB) – Replace Every 12 Months