--- product_id: 11353547 title: "iSpring F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems" brand: "ispring" price: "฿2425" currency: THB in_stock: true reviews_count: 13 category: "I Spring" url: https://www.desertcart.co.th/products/11353547-ispring-f3-6-month-prefilter-water-filter-for-standard-undersink store_origin: TH region: Thailand --- # 6-month high capacity lifespan Triple-stage filtration for pure water Easy DIY replacement iSpring F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems **Brand:** ispring **Price:** ฿2425 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with iSpring’s triple-filter power — because your water deserves the best! ## Quick Answers - **What is this?** iSpring F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems by ispring - **How much does it cost?** ฿2425 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/11353547-ispring-f3-6-month-prefilter-water-filter-for-standard-undersink) ## 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 - • **6-Month High Capacity Pack:** Enjoy half a year of consistently clean, great-tasting water without hassle. - • **NSF/ANSI Certified Quality:** Certified to meet rigorous standards ensuring safe, reliable water filtration. - • **Triple-Stage Filtration Power:** Sediment, granular activated carbon, and carbon block filters work in harmony to remove sediment, chlorine, and impurities. - • **Extend Your RO Membrane's Life:** Prefiltering protects your reverse osmosis membrane, saving you money and maintenance time. - • **Effortless Installation & Replacement:** Designed for quick, no-fuss swaps compatible with most standard RO systems, including iSpring RCC7. ## Overview The iSpring F3 6-Month Prefilter Water Filter pack includes three 10" x 2.5" filters (sediment, granular activated carbon, and carbon block) designed for standard undersink and reverse osmosis systems like the iSpring RCC7. Certified to NSF/ANSI standards, it effectively removes sediment and chlorine, extends membrane lifespan, and offers easy replacement every six months for consistently clean, great-tasting water. ## Description iSpring F3 6-Month Prefilter Water Filter for Standard Undersink/Reverse Osmosis RO Systems - desertcart.com Review: dependable reverse osmosis filters backed by outstanding service - I’ve been using iSpring reverse osmosis refill filters since 2018, and I couldn’t be happier with both the product quality and the customer service. The filters are consistently reliable, easy to replace, and maintain excellent water clarity and taste. I’ve noticed a significant difference in the quality of our drinking water over the years, and that consistency is exactly why I continue to reorder from iSpring. What truly sets this company apart, though, is their customer support — especially Nick. He has been incredibly helpful every time I’ve had questions about compatibility, replacement timing, or ordering the correct filters. He responds promptly, explains everything clearly, and genuinely cares about making sure customers are taken care of. It’s rare to find that level of ongoing support years after the initial purchase. If you’re looking for dependable reverse osmosis filters backed by outstanding service, I highly recommend iSpring — and if you get the chance to work with Nick, you’ll be in great hands. Review: Great product. - These work great and having to only change them once a year is absolutely amazing. ## Features - Individually wrapped 6-month high capacity prefilter 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" 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 | | Best Sellers Rank | #3,906 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Replacement Countertop Water Filters #12 in Under-Sink & Countertop Filtration | | Brand Name | iSpring | | Compatible Water Purifier Models | iSpring RCC7 | | Customer Reviews | 4.8 4.8 out of 5 stars (2,394) | | EU Spare Part Availability Duration | 6 Months | | External Testing Certification | ANSI | | Global Trade Identification Number | 00662425070145 | | Included Components | Water filters | | Item Dimensions D x W x H | 11"D x 6"W x 6"H | | Item Type Name | Water Filter | | Item Weight | 0.01 Ounces | | Manufacture Year | 2021 | | Manufacturer | iSpring | | Manufacturer Part Number | F3 | | Material Type | Carbon | | Model Number | F3 | | Number of Items | 1 | | Product Benefits | Removes sediment, chlorine, and residual chlorine, extends membrane lifespan, and is easy to replace, meeting NSF/ANSI standards. | | Set Name | Replacement Filter Pack 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 ![iSpring 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 **Color** 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 ### ⭐⭐⭐⭐⭐ dependable reverse osmosis filters backed by outstanding service *by N***S on March 2, 2026* I’ve been using iSpring reverse osmosis refill filters since 2018, and I couldn’t be happier with both the product quality and the customer service. The filters are consistently reliable, easy to replace, and maintain excellent water clarity and taste. I’ve noticed a significant difference in the quality of our drinking water over the years, and that consistency is exactly why I continue to reorder from iSpring. What truly sets this company apart, though, is their customer support — especially Nick. He has been incredibly helpful every time I’ve had questions about compatibility, replacement timing, or ordering the correct filters. He responds promptly, explains everything clearly, and genuinely cares about making sure customers are taken care of. It’s rare to find that level of ongoing support years after the initial purchase. If you’re looking for dependable reverse osmosis filters backed by outstanding service, I highly recommend iSpring — and if you get the chance to work with Nick, you’ll be in great hands. ### ⭐⭐⭐⭐⭐ Great product. *by B***L on March 2, 2026* These work great and having to only change them once a year is absolutely amazing. ### ⭐⭐⭐⭐⭐ Great value *by D***K on March 10, 2026* Works great helps with taste of water ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/11353547-ispring-f3-6-month-prefilter-water-filter-for-standard-undersink](https://www.desertcart.co.th/products/11353547-ispring-f3-6-month-prefilter-water-filter-for-standard-undersink) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-28*