1 / 7iSpring F3 Three-Stage RO Prefilter Cartridge Set
Three-Stage: The iSpring F3 is a three-cartridge prefilter replacement set described for most standard reverse osmosis systems. It includes sediment, granular activated carbon and carbon block filters, but not an RO membrane, so it is for replacing prefilters rather than a complete system refresh.
At a glance
- Three filter stages are represented by one sediment filter, one granular activated carbon filter and one carbon block filter.
- The listing describes the pack as a six-month prefilter supply for most standard RO systems.
- An RO membrane is explicitly excluded from the pack.
Reference price: $24.68
Price checked: Nov 13, 2026
View offerAhead of Black FridayExplore the selectionOften bought together
Pros and cons
Pros
- The three listed filter types make this a more complete prefilter change than buying only one cartridge type.
- The listing names iSpring RCC7 as a compatible purifier model.
Technical specifications
10 specifications| Brand | iSpring |
|---|---|
| Model | F3 |
| Material listed | Carbon,Activated Carbon |
|---|---|
| Product benefit listed | Removes Dust |
| Certification listed | NSF/ANSI |
| Filter quantity and types | 3 pieces of 10" x 2. 5" replacement water filters included: 1x sediment filters, 1x granular activated carbon filters, and 1x carbon block filters. |
|---|---|
| Stated replacement interval | 6-month |
| RO membrane | This filter pack does NOT include an RO membrane |
| Compatible purifier model listed | iSpring RCC7 |
| Compatibility claim | Individually wrapped 6-month high capacity prefilter replacement cartridge pack for most standard RO filtration systems |
What to know before buying
Listing details to confirm
Listing dimensions conflict: one detail gives 6.4D x 25.4W x 6.4H centimetres, while another gives 25.4 x 7.62 x 7.62 cm; 0.28 g. The title and cartridge description also present the pack as three filters, while the details say one pack and one included replacement filter, so verify the dimensions and selected pack contents before ordering. The claimed six-month interval is a listing description, not a guarantee of service life for every system or water condition.
Who is it for?
A good fit for
- Owners of standard RO systems seeking sediment and carbon prefilters in one set.
- iSpring RCC7 owners, subject to checking the cartridge fit and replacement schedule for their system.
Less suited to
- Anyone needing an RO membrane as part of this purchase.
- Buyers seeking a complete reverse osmosis system rather than replacement prefilters.
Customer reviews on Amazon
- 5 stars
80% 80% - 4 stars
11% 11% - 3 stars
3% 3% - 2 stars
1% 1% - 1 star
5% 5%
Customer feedback describes straightforward installation, useful instructions and perceived improvements in water taste and quality. Leakage and durability receive mixed assessments. Those views concern water systems more broadly and do not establish the performance or lifespan of this replacement cartridge set, so buyers should weigh them separately from its listed filter types and stated replacement interval.
Positive themes
- Feedback highlights ease of installation and clear instructions.
- Customers describe positive experiences with water taste and perceived quality.
Mixed feedback
- Customer feedback is mixed on leakage.
- Customer feedback is mixed on durability.
Frequently asked questions
What filters are listed in the iSpring F3 set?
The listing specifies one sediment filter, one granular activated carbon filter and one carbon block filter. It also describes them as 10-inch by 2.5-inch cartridges.
Does this set include an RO membrane?
No. The listing explicitly says the filter pack does not include an RO membrane.
Is the F3 compatible with every reverse osmosis system?
The listing claims compatibility with most standard RO systems and specifically names the iSpring RCC7. Confirm cartridge fit for your particular system before ordering.
How often are these prefilters meant to be replaced?
The listing describes the set as a six-month supply. Actual replacement timing may depend on the system and water conditions.
Alternative options
iSpring Whole House Water Filter System, Reduces Iron, Manganese, Chlorine, Sediment, Taste, and Odor, 3-Stage Iron Filter Whole House, Model: WGB32BM
$825.99
1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 4Pack
$46.99
iSpring WGB21B 2-Stage Whole House Water Filtration System, 50000 Gallons | SGS-Tested CTO Filter, Reduces up to 99% Chlorine, Bad Taste, and Odor, 1" inlet/outlet, 10" x 4.5", No power needed
$249.00
ICEPURE 1 Micron 2.5" x 10" Whole House CTO Carbon Sediment Water Filter Cartridge Compatible with Dupont WFPFC8002, WFPFC9001, SCWH-5, WHCF-WHWC, WHCF-WHWC, FXWTC, CBC-10, RO Unit, Pack of 3
$33.99
iSpring RCC1UP 6-Stage 100 GPD Under Sink Reverse Osmosis Drinking Water Filtration System with Booster Pump and UV Ultraviolet Filter, Patented Top-Mounted Faucet Design for Easy Installation
$654.00
Geekpure Replacement Universal Filter Set with 100 GPD Membrane for Standard 5 Stage RO System (5 Count)
$69.98
iSpring WGB21BM 2-Stage Whole House Water Filtration System, 10” x 4.5” Carbon Block and Iron & Manganese Reducing Filters, 1" Ports
$386.60
1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 3Pack
$37.99
Max Water 10" Standard Whole House Replacement Water Filters Set - Coconut Shell Carbon, Polypropylene Sediment, and GAC Carbon Filters Variation for Standard Reverse Osmosis RO Systems (3 Pack)
$42.00
iSpring RO500AK-BN Reverse Osmosis Water Filter, NSF 58 Certified, 500 GPD Tankless Under Sink RO System, Natural pH Alkaline Remineralization, 2:1 Pure to Drain Ratio, Brushed Nickel Faucet
$899.99
iSpring CKC1C Chlorine Removal Countertop Water Filter System, 10000 Gal | Cartridge 2.5" x 10", Carbon Filter, Drinking Water Filtration System
$45.68
