--- product_id: 22193200 title: "F4-CUA4" brand: "ispring" price: "41475 som" currency: KGS in_stock: true category: "I Spring" url: https://www.desertcart.kg/products/22193200-f4-cua4 store_origin: KG region: Kyrgyzstan --- # 0.01 micron hollow fiber UF membrane tech Twist-on filters reduce waste & pollution 5 micron sediment filter blocks rust & sand F4-CUA4 **Brand:** ispring **Price:** 41475 som **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with next-level ultra filtration! ## Quick Answers - **What is this?** F4-CUA4 by ispring - **How much does it cost?** 41475 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/22193200-f4-cua4) ## 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 - • **Eco-Friendly Filtration:** Inline cartridge design minimizes environmental impact by preventing secondary pollution and extending filter life. - • **Effortless Filter Swaps:** Twist-on/twist-off design means no tools or plumbing hassle—replace filters in seconds, not hours. - • **Nano-Level Purification:** Ultra-filtration membrane with 0.01 micron pores ensures only pure water and essential minerals pass through. - • **Precision Particle Defense:** 5-micron sediment filter traps rust, sand, and dirt to protect your system’s core. - • **Advanced Contaminant Control:** KDF + activated carbon combo targets chloramine, heavy metals, and hydrogen sulfide for cleaner, safer water. ## Overview The iSpring F4-CUA4 Filter Set is a comprehensive 4-stage water filtration pack designed for the CU-A4 Ultra Filtration System. Featuring a 5-micron sediment filter, a cutting-edge 0.01 micron hollow fiber UF membrane, KDF and activated carbon filters, it effectively removes rust, sand, chloramine, heavy metals, and odors. The easy twist-on replacement system ensures hassle-free maintenance while reducing environmental waste. Trusted by thousands with a 4.6-star rating and backed by lifetime support from Atlanta, GA. ## Description The filter pack F4-CUA4 includes a 1st stage 5 micron sediment filter that can effectively remove rust sand and solid impurities in the water to protect the delicate UF membrane; last 6 months. The 2nd stage state-of-the-art UF hollow fiber membrane that uses standard home water pressure to push water through a Semi-Permeable membrane. Suspended particles and materials of high molecular weight are unable to pass through the 0.1 micron UF membrane, leaving you with only fresh water and dissolved minerals; it lasts 12 months. 1 x 3rd stage KDF media (or kinetic degradation fluxion media) with activated carbon KDF itself is known to remove chlorine rust unpleasant taste and odor hydrogen sulfide iron lead nickel chromium cadmium calcium aluminium mercury arsenic and other compounds. When used with carbon, KDF can extend the carbon filter life up to 8 times. It also adds a dose of zinc ions to the filter water; last 6 months. 1 x 4th stage Post activated carbon filter, adopting fine coconut shell activated carbon with ultra-micron aperture. This carbon filter absorbs residual chlorine organics humus and odor; last 6 months. ## Features - PP Sediment Filter (5 microns) removes larger particles like rust sand and dirt ) Ultra Filtration Filter (contains hollow fiber membrane technology with a pore size of just 0 01 micron ) KDF and GAC Filter (provides much better control of particularly problematic contaminants including chloramine hydrogen sulfide and metals) Fine Activated Carbon Filter (provides final polishing before the purified water is delivered to the faucet removing any possible residual chlorine tastes or odors ) - EASY-TO-REPLACE FILTER Filter replacement is designed for ease No need to disconnect hoses or water lines Just Twist On / Twist Off filter cartridges make changing filters a snap - FEATURE iSpring F4-CUA4 Replacement filter pack includes one of each filter for CU-A4 Ultra Filtration System - SAVE EARTH Reduce your environmental impact as the inline filter cartridge design prevents 2nd-time pollution - 100% SATISFIED CUSTOMERS Extended manufacturer with lifetime personalized support from Atlanta, GA ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00TZBP2YO | | Best Sellers Rank | #3,377 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #198 in Replacement Under-Sink Water Filters | | Brand Name | iSpring | | Customer Reviews | 4.6 4.6 out of 5 stars (7,270) | | External Testing Certification | DOT | | Global Trade Identification Number | 00662425072774 | | Included Components | UltraFiltration filters | | Item Dimensions D x W x H | 8"D x 10"W x 16"H | | Item Highlight | Reduces 99.99% Contaminants, Heavy Metals, Chlorine, Sediment, Rust, Silt, Up to 12 months, 0.1μm Under Sink Water Filter | | Item Type Name | iSpring F4-CUA4 Replacement Filter Pack for 4-Stage Ultra Filtration System CU-A4, Sediment, UF, KDF, and Activated Carbon Filter, 4pcs | | Manufacturer | iSpring Water System | | Manufacturer Part Number | F4-CUA4 | | Material Type | Polypropylene (PP) | | Model Number | CUA4 | | Number of Items | 1 | | Number of Packs | 1 | | Product Benefits | Improves water taste, reduces odor, removes contaminants including chloramine, hydrogen sulfide, and metals | | Set Name | White - 8000 Gallons (1-Year Set - 4 Filters) | | UPC | 662425072774 | | Unit Count | 1 Count | ## Product Details - **Brand:** iSpring - **External Testing Certification:** DOT - **Material:** Polypropylene (PP) - **Product Dimensions:** 8"D x 10"W x 16"H ## Images ![F4-CUA4 - Image 1](https://m.media-amazon.com/images/I/41wfdrF8yXL.jpg) ![F4-CUA4 - Image 2](https://m.media-amazon.com/images/I/51lszcnGoEL.jpg) ![F4-CUA4 - Image 3](https://m.media-amazon.com/images/I/513IMpRmGPL.jpg) ![F4-CUA4 - Image 4](https://m.media-amazon.com/images/I/41ndCJtC5BL.jpg) ![F4-CUA4 - Image 5](https://m.media-amazon.com/images/I/51LmCG-d4UL.jpg) ## Available Options This product comes in different **Set** options. ## Frequently Bought Together - iSpring F4-CUA4 Replacement Pack for 4-Stage Ultra Filtration System CU-A4, Sediment, UF, KDF, and Activated Carbon Filter, 4pcs, White - iSpring CU-A4 0.01μm Ultra-Filtration Under Sink Water Filter System, Tankless 4-Stage High Capacity, Remove 99.99% Contaminants, Quick Filter Change with Brushed Nickel Faucet, White - iSpring FKG15Q Quick-Change Inline KDF/Carbon Filter for Ultra Filtration Under Sink Water Filter System CU-A4, White --- ## 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.kg/products/22193200-f4-cua4](https://www.desertcart.kg/products/22193200-f4-cua4) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-10-22*