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WK18 3 Years Under Sink Water Filter, 18000 Gallons, 2.1GPM, 0.5μm

WK18 3 Years Under Sink Water Filter, 18000 Gallons, 2.1GPM, 0.5μm

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Regular price $95.98
Regular price Sale price $95.98
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  • Risk-Free 30-Day Returns
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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

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

  • 【Up to 3 Years of Filter Life】Designed for long-term use, this under sink water filter system delivers up to 18,000 gallons of filtration capacity and lasts up to 3 years — far longer than ordinary water filters under sink. The upgraded filtration area with 20× expanded surface area enhances contaminant-holding capacity, helps reduce clogging, and maintains consistent water flow, so you can enjoy reliable performance from your under the sink water filter without frequent replacements.
  • 【2.1 GPM High Flow Filtration】Experience fast and steady water flow with this under sink water filtration system, delivering up to 2.1 GPM high flow performance without sacrificing filtration quality. Fill a cup in about 3 seconds and enjoy smooth water flow for cooking, washing vegetables, making coffee, and other daily kitchen tasks.
  • 【NSF Certified Safety & 0.5μm Filtration】WK18 Under Sink Water Filter is built with NSF/ANSI 372 certified materials and advanced 0.5μm precision filtration to help reduce lead, chlorine, sediment, bad taste, and odor. This under counter water filter serves as a high-performance kitchen sink water filter, providing cleaner, better-tasting water while preserving beneficial minerals for daily drinking, cooking, and beverages.
  • 【Easy 3-Minute Installation】This water filter under sink installs in about 3 minutes with no professional tools required. The upgraded brass connector provides a stronger, more secure connection than traditional plastic fittings, helping reduce leak risks. Flexible installation options support vertical placement or wall mounting to fit different cabinet spaces.
  • 【3-Second Filter Replacement】Replace the filter in just 3 seconds with the twist-lock design—no tools required. The anti-slip grip texture allows quick and easy filter replacement, even with wet hands. Compatible replacement filter (ASIN:B0D5XMQ633) at only $39.99 per filter, helping reduce long-term maintenance costs.
  • 【Multi-Scene Water Filtration】Designed for versatile use, thisunder the sink water filter system connects to standard cold water lines and works for kitchens, apartments, offices, and RVs. Ideal for cooking, food preparation, coffee making, and everyday water needs.**Only for cold water use.**
  • 【After-Sales Assistance】Vonwater provides reliable customer support after purchase for installation guidance, product questions, and maintenance assistance. Designed for municipal tap water and cold water use only, this under sink water filtration system is not suitable for well water or hot water sources.

Overview

  • Brand : VonWater
  • Special Feature : 3 Years, Easy Installation, NSF/ANSI 372,Chlorine Reduction,0.5 μm Filtration Accuracy
  • Product Dimensions : 4.76"L x 6.57"W x 14.56"H
  • Material : Activated Carbon Block
  • Capacity : 18000 gallons
  • Included Components : Inlet hose * 1, Outlethose * 1, 1/2"-3/8"Convertor Adapter* 1
  • Package Information : Box
  • Installation Type : Under Sink
  • Purification Method : Granular Activated Carbon
  • Model Name : WK Series
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Is Hard Water or Contaminated WaterDamaging Your Home?
Signs You May Be Experiencing Problems With Your Tap Water
Protect Your Home Appliances
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Softer Skin & Healthier Hair
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Pure, Better-Tasting Drinking Water
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Prevent Costly Hard Water Damage
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Reduce Limescale Buildup
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Clean Water, Whole Home
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Protect Your Home Appliances
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Softer Skin & Healthier Hair
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Pure, Better-Tasting Drinking Water
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Prevent Costly Hard Water Damage
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Reduce Limescale Buildup
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Clean Water, Whole Home
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RO Water Filters Reverse Osmosis Water Filters for Pure Drinking Water
Salt Water Softeners Salt Water Softeners for Powerful Hard Water Treatment
Pure Water. Better Living.

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.

Descaling Solutions Descaling Solutions for Removing Limescale and Mineral Buildup
👉 Enjoy healthier skin and hair with every use.
Water Filter Cleaning Kits

👉 Prevent scale buildup and keep your appliances running efficiently.

Under Sink Water Filters

👉 Softer, brighter clothes that last longer with every wash.

Reverse Osmosis Systems Best Reverse Osmosis Systems for Clean Drinking Water

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.

Impurity Reduction 95%
Chlorine Removal 99%

FAQ

Is installation difficult?
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No. Our systems are designed for easy DIY installation and most homeowners can install them without professional tools. If you need help, our support team is always available.
Do I need a plumber to install the system?
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No plumber is required. The system connects directly to your existing plumbing with simple fittings.
How does this system improve water quality?
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Our filtration system helps reduce common impurities and minerals that cause hard water problems, improving the taste and clarity of your water.
Will this help protect my appliances?
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Yes. Hard water minerals can build up inside appliances. Our system helps reduce scale buildup, helping extend the life of washing machines, dishwashers, and water heaters.
How often do filters need to be replaced?
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Most filters only need replacement every 6–12 months, depending on usage and local water conditions.
Will this improve my skin and hair?
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Many customers notice softer skin and smoother hair after switching to filtered or softened water.
What if I'm not satisfied with the system?
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If you're not completely satisfied, you can return your product within 30 days for a full refund.
Easy to install — no plumber required. Our experts are here if you need help.
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