---
product_id: 11353547
title: "F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems"
brand: "ispring"
price: "VT17221"
currency: VUV
in_stock: true
reviews_count: 13
category: "I Spring"
url: https://www.desertcart.vu/products/11353547-f3-6-month-prefilter-water-filter-for-standard-undersink-reverse
store_origin: VU
region: Vanuatu
---

# 6-month high capacity lifespan 3-stage filtration for pure water Easy DIY installation F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems

**Brand:** ispring
**Price:** VT17221
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the curve with crystal-clear water—because your health deserves the best!

## Quick Answers

- **What is this?** F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems by ispring
- **How much does it cost?** VT17221 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/11353547-f3-6-month-prefilter-water-filter-for-standard-undersink-reverse)

## Best For

- ispring enthusiasts

## Why This Product

- Trusted ispring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **NSF Certified Quality:** Certified to meet rigorous ANSI/NSF standards for safe, reliable water filtration.
- • **Effortless Replacement:** Individually wrapped cartridges and clear instructions make filter swaps quick and mess-free.
- • **Universal Compatibility:** Designed to fit most standard reverse osmosis systems, including iSpring RCC7 and popular alternatives.
- • **6-Month Filter Longevity:** Enjoy half a year of consistently clean, great-tasting water without hassle.
- • **Triple-Action Filtration:** Sediment, granular activated carbon, and carbon block filters work in harmony to remove chlorine, sediment, and impurities.

## Overview

The iSpring F3 NSF Certified 6-Month Prefilter Replacement Pack includes three high-capacity filters (sediment, granular activated carbon, and carbon block) designed to fit most standard reverse osmosis systems. Certified to NSF/ANSI standards, this pack ensures removal of sediment and chlorine, extends membrane life, and delivers fresh, great-tasting water for six months per set. Easy to install and individually wrapped for convenience, it’s a trusted upgrade for health-conscious professionals.

## Description

Buy iSpring F3 NSF Certified 6-Month Prefilter Replacement Water Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems: Replacement Countertop Water Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great filter - Water tastes great, easy to install after looking at the video tutorials
Review: Perfect replacement for Culligan SY-2650 - I am very pleased with this product performance and build quality. I replaced a Culligan SY-2650 since I could no longer find replacement filters. I looked at many other offering and reviews. I didn't want a RO system and was about to purchase another brand when I came across ISpring. I liked the different filter choices to address my water filtration needs and the purchase price was inline with what I wanted and expected to pay. The ISpring system is better then the Culligan that was replaced, water tastes better and flows much faster. When registering my product purchase Nick has been very helpful through the process and quick to respond. Very nice to work with.

## Features

- Individually wrapped 6-month high capacity prefilter replacement cartridge pack for most standard RO filtration systems
- Experience clean, safe, and good-tasting water every time you turn on the faucet
- 3 pieces of 10" x 2. 5" replacement water filters included: 1x sediment filters, 1x granular activated carbon filters, and 1x carbon block filters.
- This filter pack does NOT include an RO membrane
- If you have trouble installing the filters, please refer to the user manual or contact us

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NQF490I |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #3,819 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Replacement Countertop Water Filters |
| Brand | iSpring |
| Color | White |
| Compatible Water Purifier Models | iSpring RCC7 |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,362) |
| Date First Available | September 19, 2014 |
| EU Spare Part Availability Duration | 6 Months |
| External Testing Certification | ANSI |
| Finish | Yes |
| Global Trade Identification Number | 00662425070145 |
| Included Components | Water filters |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item model number | F3 |
| Manufacture Year | 2021 |
| Manufacturer | iSpring |
| Material | Carbon |
| Number Of Pieces | 3 |
| Number of Items | 1 |
| Part Number | F3 |
| Pattern | Reverse |
| Product Benefits | Removes sediment, chlorine, and residual chlorine, extends membrane lifespan, and is easy to replace, meeting NSF/ANSI standards. |
| Product Dimensions | 11"D x 6"W x 6"H |
| Set Name | Replacement Filter Pack Set |
| Size | 3 Count (Pack of 1) |
| Style | 6-Month Prefilter Replacement Set |
| UPC | 662425070145 |
| Unit Count | 3 Count |

## Product Details

- **External Testing Certification:** ANSI
- **Item Weight:** 0.01 Ounces
- **Material:** Carbon
- **Product Dimensions:** 11"D x 6"W x 6"H

## Images

![F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems - Image 1](https://m.media-amazon.com/images/I/71do8xBHSiL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can this set of replacement filters be used for the iSpring US31?**
A: Hi,

Yes, these filters are compatible with the unit model US31. For more details, please contact us at (678)261-7611.

Regards,
iSpring Water Systems, LLC

**Q: Is the water supposed to come out foggy and fizzy?**
A: Hi Ann,

Yes, for a week or two, the water might come out cloudy due to the trapped air bubbles in the system. In time, these will dissipate and your water will begin to clear up. If you have any questions or need additional assistance, please contact us at support@123filter.com or call us at (678) 261-7611.

Thanks,

iSpring Water Systems, LLC

**Q: Will these cartridges work on an existing Culligan RO system?  How will I know?  Thanks.**
A: If the size of filter is the same and the end deals are the same then, I think they should work.

**Q: Can we use this package for WCC31?**
A: Thanks for the question! You can certainly use this filter pack for the WCC31. We use industry standard filters, so each of the 2.5" x 10" cartridges and filter packs are completely interchangeable with each other.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great filter
*by A***R on December 14, 2025*

Water tastes great, easy to install after looking at the video tutorials

### ⭐⭐⭐⭐⭐ Perfect replacement for Culligan SY-2650
*by M***G on August 20, 2025*

I am very pleased with this product performance and build quality. I replaced a Culligan SY-2650 since I could no longer find replacement filters. I looked at many other offering and reviews. I didn't want a RO system and was about to purchase another brand when I came across ISpring. I liked the different filter choices to address my water filtration needs and the purchase price was inline with what I wanted and expected to pay. The ISpring system is better then the Culligan that was replaced, water tastes better and flows much faster. When registering my product purchase Nick has been very helpful through the process and quick to respond. Very nice to work with.

### ⭐⭐⭐⭐⭐ Excellent customer service and product
*by D***H on September 21, 2025*

Had an issue with one of the filter housings. Contacted iSpring customer service because unit was past returning to Amazon. Laurence responded very quickly and resolved my issue, sent me a replacement housing overnight, excellent customer service and communication! Wouldn't hesitate to buy another product from them. Filter system is working perfectly now. Very easy to install.

## Frequently Bought Together

- iSpring F3 NSF Certified 6-Month Prefilter Replacement Water Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems
- iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + GAC + Carbon

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-15*