iSpring F3 10″x2.5″ Standard Replacement Prefilter Cartridges
- iSpring 6-month replacement prefilter filter pack for standard 5-stage reverse osmosis systems, tested by independent third-party to meet NSF/ANSI standard
- Fits iSpring 5-stage, 6-stage ,and 7-stage RO systems. Also compatible with most industry standard sized 10-inch filter housings
- 1st stage – 5 micron polypropylene sediment filter removes dust, silt, rust and other particles from the source water
- 2nd stage – 5 micron granular activated carbon filter gets rid of unpleasant chlorine, tastes and odors
- 3rd stage – 5 micron carbon block filter removes any residual chlorine.














