set of  4 replacement filters , 4 stage Microline TFC-25D - RO system uses a carbon block pre-filter to reduce sediment, chlorine and chlorine by-products before the membrane filters out impurities larger than .001 microns. The 2 GAC post filters treat for taste and odor. You can find and order all your filters at once in our replacement kits Microline TFC-25D RO System Replacement Water Filter Kit S7028|S1227RS|S7025|K2333-BB. Microline TFC-25D RO System Replacement Water Filter Kit provides a complete one year supply of filters for your TFC-25D reverse osmosis system. This kit includes all pre and post filters as well as the membrane. Kit includes: Qty. 1 - S7028 Compatible Sediment/Carbon Block Prefilter Qty. 1 - S1227RS TFC RO Membrane 25 gpd Qty. 1 - S7025 GAC Postfilter Qty. 1 - K2333-BB Inline GAC Postfilter Note: Reverse osmosis membrane needs to be replaced every 2-3 years. Microline TFC-25D

STAGES

STAGE 1 – Sediment/Carbon Pre-Filter (S7028) – Replace Every 12 Months
STAGE 2 – RO Membrane TFC 25 GPD (S1227RS) – Replace Every 24 Months
STAGE 3 – Carbon GAC Post Filter (S7025) – Replace Every 12 Months
STAGE 4 – Inline Carbon GAC Post Filter (K2333-BB) – Replace Every 12 Months