Proline Five Stage RO System


Replacement filters and parts for the Proline Five-Stage RO system are available here at huge cost savings. These aftermarket filters are high quality and will produce pristine drinking water for your household. The Proline 5 Stage RO system features a 5 micron sediment filter, a granular activated carbon pre-filter, a 5 micron carbon block pre-filter, a 50 GPD TLC membrane, and an inline 5 micron granular activated carbon post filter. This reverse osmosis system uses a sediment filter, granular activated carbon (GAC) and carbon block pre-filter to reduce sediment, chlorine and chlorine by-products before the membrane filters out impurities larger than .001 microns. The GAC post filter treats for taste and odor.



  • STAGE 1 – Sediment Pre-Filter (93023) – Replace Every 12 Months
  • STAGE 2 – Carbon GAC Pre-Filter (OCB934ROT33) – Replace Every 12 Months
  • STAGE 3 – Carbon Block Pre-Filter (OMB934-5m) – Replace Every 12 Months
  • STAGE 4 – RO Membrane TLC 50 GPD (555694-00) – Replace Every 24 Months
  • STAGE 5 – Inline Carbon GAC Post Filter (CL10ROT33-BB) – Replace Every 12 Months