iSpring F3 10"x2.5" Standard Replacement Prefilter Cartridges for Reverse Osmosis and 3-Stage Water Filtration Systems, Pre-filter
About this item
- 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.
![](http://123filter-com.b-cdn.net/ac/image/thumbnails/18/7e/F3_main_jpg-100321-750x750.jpg)
iSpring F3 10"x2.5" Standard Replacement Prefilter Cartridges for Reverse Osmosis and 3-Stage Water Filtration Systems, Pre-filter
- Availability: In Stock
- Model: F3
- Manufacturer: iSpring
Reviews with images
![](image/7_26_21_review_image/F3/Amazon/INTRO.jpg)
![](image/7_26_21_review_image/F3/Amazon/A. Lee.jpg)
![](image/7_26_21_review_image/F3/Amazon/r chandler.jpg)
Write Review
![5 out of 5 Stars!](http://123filter-com.b-cdn.net/ac/extensions/123filter/storefront/view/123filter/image/stars_5.png)
2020-05-19
I have a older version of 3 stages water system. The installation was straightforward, just beware the flow direction requirement of the 2nd stage filter. Everything seems working as expected. 5 stars for the value.
![](image/7_26_21_review_image/F3/Amazon/A. Lee.jpg)
![5 out of 5 Stars!](http://123filter-com.b-cdn.net/ac/extensions/123filter/storefront/view/123filter/image/stars_5.png)
2020-06-20
I have not had to purchase bottled water since I installed this filter. I drink a lot more water now than I did before.
![](image/7_26_21_review_image/F3/Amazon/INTRO.jpg)
![5 out of 5 Stars!](http://123filter-com.b-cdn.net/ac/extensions/123filter/storefront/view/123filter/image/stars_5.png)
2018-03-14
I wanted to build a filtration system in my 5th wheel and needed filters that came as a 3 phase pack. After looking through Home Depot, Lowe's, and Ace hardware I decided to do my research on Amazon. I found the Fortress Filtration Triple Stage 10" x 2.5" Water Filter Housing 3/4 1 inch/wrench/bracket and the iSpring F3 filters work perfectly. Great job Nick
![](image/7_26_21_review_image/F3/Amazon/r chandler.jpg)
![5 out of 5 Stars!](http://123filter-com.b-cdn.net/ac/extensions/123filter/storefront/view/123filter/image/stars_5.png)
2019-11-28
I drink a lot of water, primarily water. So, I care about the water I drink. I've always replace my ro system filters on time. The replacement filters fits my system perfectly and water tastes good. Will buy again.
![5 out of 5 Stars!](http://123filter-com.b-cdn.net/ac/extensions/123filter/storefront/view/123filter/image/stars_5.png)
2019-09-21
It is nice to have replacement parts that work ( and fit) as well as the original. Easy to do, works very well.
![5 out of 5 Stars!](http://123filter-com.b-cdn.net/ac/extensions/123filter/storefront/view/123filter/image/stars_5.png)
2019-06-28
Water quality is great and keeps my reverse osmosis filter going a long time. These are great filters in good individually wrapped packaging.
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