Economy 4-Stage Reverse Osmosis Filter Pak

Economy Filter Package Fits Most Standard 4-Stage Reverse Osmosis Systems. Annual Service Pak fits all industry standard 10 inch sump housings. (Membrane is not included)

If your reverse osmosis system uses standard 9.75” x 2.50” filter cartridges, this convenient package will save you money over the high prices charged by water conditioning dealers and the big home improvement stores!

Each package includes the following filters which should be replaced once each year to ensure purity and good performance from your RO system:

(1) 5-Micron Sediment Pre-filter cartridge. Melt-Blown Polypropylene - 9.75” x 2.50”

(1) 5-Micron Carbon Block filter cartridge – 9.75” x 2.50”

(1) Inline Granular Activated Carbon (GAC) Post-filter with ¼” NPT inlet/outlet ports – 2” x 10”

This package does not include the membrane, which does NOT need to be replaced annually. With proper annual replacement of the filters included in this package, the membrane can be replaced once every 3 years. Please see our selection of Thin-Film Composite (TFC) membranes when you are ready to replace the reverse osmosis membrane for your system.

Note: Whenever you change the main filters on an RO system, it’s important to sanitize the system, especially the storage tank. The storage tank contains the effluent (treated) water and holds that water until it is drawn to the dispensing faucet through the post filter. Since the RO system removes all of the chlorine or chloramines from the water, the water in the storage tank is not stabilized by a disinfectant and will develop a “bio-film” coating on the inside of the tank. The post-filter will mitigate most of the unpleasant taste from the bio-film, but if left un-sanitized indefinitely, this could pose a problem to the water quality coming from the dispensing faucet. For this reason, we strongly recommend using the Sani-Safe sanitizer each time you change filters. For more information, see the link below or look for Sani-Safe under the “Accessories” section of this site.