iSpring F21KU75 NSF Certified 2-Year Reverse Osmosis Water Filter Replacement Cartridge Set for 7-Stage 75 GPD RO Water Filtration Systems w/Alkaline Mineral & UV Filters, 21 Piece
iSpring F21KU75 NSF Certified 2-Year Reverse Osmosis Water Filter Replacement Cartridge Set for 7-Stage 75 GPD RO Water Filtration Systems w/Alkaline Mineral & UV Filters, 21 Piece
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30-Day Hassle-Free Returns
30-Day Hassle-Free Returns
Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.
✔ Easy return process
✔ Fast refunds
✔ No hidden conditions
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Fast U.S. Shipping
We ship within the United States only — no international delays.
✔ Processing time: 1–2 business days
✔ Delivery time: 3–7 business days
✔ Real-time tracking available
👉 Track your order anytime from the header via Track Order
About This
- Individually wrapped 2-year high capacity filter replacement cartridge pack for 7-stage RO AK UV systems
- Experience clean water every time you turn on the faucet. Enjoy crystal clear ice cubes, fresher tea and coffee – even better than most bottled water. TDS rejection rate up to 97% (under NSF58 testing condition)
- Alkaline mineral filter produces ph-balanced alkaline water with restored minerals such as natural calcium, magnesium, and potassium ions
- 21 pieces of 10" x 2. 5" replacement water filters included: 4x sediment filters, 4x granular activated carbon filters, 4x carbon block filters, 2x post-carbon filter, 4x alkaline filters, and 2x ultraviolet light bulb
- 75GPD Thin Film Composite (TFC) Membrane included, tested by independent third-party to meet NSF/ANSI Standard. Updated FA15 alkaline mineral filters and FT15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter replacement. If you have trouble installing the filters, please refer to the user manual or contact us
Overview
- Material : Polypropylene (PP)
- Product Dimensions : 12"D x 16"W x 16"H
- External Testing Certification : No
- Product Benefits : Improves water taste and quality, provides alkaline water with essential minerals
- Brand : iSpring
Experience the difference clean, softened water makes in your daily life — from healthier skin to better tasting drinking water.
👉 Softer skin and smoother hair with every shower.
👉 Prevent scale buildup and keep your appliances running efficiently.
👉 Softer, brighter clothes that last longer with every wash.
See the Difference in Your Water — Instantly
Hard water, chlorine, and hidden contaminants can affect your health, skin, and appliances.
Our advanced filtration system removes impurities and delivers clean, safe water throughout your entire home.
Feel the difference in every drop — from your kitchen to your shower.
FAQ
Water Filtration & Home Water Guide
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Reverse Osmosis vs Water Filter — Which Is Better?
Not sure if you need Reverse Osmosis or a standard water filter? Learn the real differences, what each system removes, and how to choose the best option for your home.
Reverse Osmosis vs Water Filter — Which Is Better?
Not sure if you need Reverse Osmosis or a standard water filter? Learn the real differences, what each system removes, and how to choose the best option for your home.
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Do I Really Need a Water Filter at Home?
Wondering if your home needs a water filter? Learn how to check your water quality, compare filter types, and choose the right system for safer, better-tasting water.
Do I Really Need a Water Filter at Home?
Wondering if your home needs a water filter? Learn how to check your water quality, compare filter types, and choose the right system for safer, better-tasting water.
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7 Signs You Have Hard Water in Your Home
Water quality plays an important role in everyday life. From drinking water to showering and washing dishes, the type of water flowing through your home affects comfort, cleanliness, and even...
7 Signs You Have Hard Water in Your Home
Water quality plays an important role in everyday life. From drinking water to showering and washing dishes, the type of water flowing through your home affects comfort, cleanliness, and even...
