This complete four-stage filter and membrane set keeps your Microline 435, TFC-4, or TFC-25D reverse osmosis system running at full capacity. Includes a split sediment/carbon pre-filter, granular activated carbon pre-filter, 50 GPD TFC membrane (S1229RS), and inline post-polishing filter with quick-connect fittings.
COMPLETE FILTER SET
Four-Stage Replacement Kit for Microline TFC Systems
SEDIMENT
Split Pre-Filter
Carbon block and sediment combo filter (S7028) removes particulate and chlorine from feed water
GAC
Activated Carbon Pre-Filter
Granular activated carbon filter (S7025) improves incoming water quality before membrane
MEMBRANE
50 GPD TFC Membrane
Original Clack Microline membrane (S1229RS) with 94%+ TDS rejection rating
POLISH
Inline Carbon Post
6" bullet-style filter with 3/8" quick connects removes residual taste and odor
SPECIFICATIONS
Kit Contents & Performance Data
| Membrane Output | 50 gallons per day (GPD) at standard conditions |
| TDS Rejection Rate | 94% or higher (typical residential source water) |
| Post Filter Size | 6 inch inline cartridge with 3/8" quick-connect fittings |
| Stage 1 Part Number | S7028 (split sediment/carbon block pre-filter) |
| Stage 2 Part Number | S7025 (granular activated carbon pre-filter) |
| Membrane Part Number | S1229RS (original Clack Microline TFC membrane) |
| Kit Components | 4 pieces total (2 pre-filters, 1 membrane, 1 post filter) |
COMPATIBILITY & APPLICATIONS
Designed for Microline TFC Reverse Osmosis Systems
This complete filter and membrane set fits Microline TFC-435, TFC-4, and TFC-25D reverse osmosis drinking water systems. The included post filter uses 3/8 inch quick-connect fittings standard on newer Microline units. If your system uses 1/4 inch connections (older models), you may need adapters or a different post filter configuration. All filters are direct replacements for original Clack Microline components and maintain the same performance specifications as factory equipment.
💧 Replace all four stages together to restore your system to like-new performance. Membranes typically last 2-3 years, while pre and post filters should be changed every 6-12 months depending on source water quality.
