Universal 5-Stage Under Sink Reverse Osmosis Replacement Filter Kit
Everything you need to maintain a conventional 5-stage reverse osmosis system for a full year. This kit includes three pre-filters, a high-efficiency TFC membrane rated at 50, 75, or 100 gallons per day, and an inline GAC post-filter for final polishing.
Five-stage filtration sequence
Pre-Filter
5-micron sediment cartridge removes dirt, rust, and suspended particles before water reaches carbon stages. Standard 10" x 2.5" size.
Replace annuallyCarbon Block Pre-Filters
Two carbon block cartridges eliminate chlorine, volatile organic compounds, and chemical contaminants. Protects membrane from oxidation damage.
Replace annuallyTFC Reverse Osmosis Membrane
Thin-film composite membranes rated at 50, 75, or 100 gallons per day removes dissolved solids, heavy metals, and microscopic contaminants. Standard 1.8" x 12" housing.
Lasts 2–3 yearsInline GAC Post-Filter
Granular activated carbon inline filter provides final polishing to remove any residual taste or odor. 10" x 2" cartridge with 1/4" female pipe thread; 1/4" quick connect; 3/8" quick connect connections.
Replace annuallyFits most standard 5-stage systems
This kit uses industry-standard dimensions and works with conventional 5-stage reverse osmosis systems including IPW Industries Goldline-50, Valueline, RO550-905, Puroline PL-5000, and AXEON RF-5000 models. Verify your system uses 10" x 2.5" pre-filter housings, a standard 1.8" x 12" membrane housing, and 1/4" NPT inline post-filter connections (also available in 1/4" or 3/8" quick connect). When installing the inline post-filter, transfer the push-connect fittings from your old filter to the new cartridge using Teflon tape for a secure seal.
