4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)
LiquaGen Water

4.5" x 20" Coconut Shell Carbon + KDF 55 Filter Cartridge (Heavy Metals and Chlorine Reduction)

Regular price $121.00 Sale price $89.99

🌊 Product Overview

The LiquaGen 4.5” x 20” Coconut Shell Carbon + KDF-55 Whole House Water Filter Cartridge is engineered for maximum contaminant reduction and long-lasting performance. Designed to fit all standard 20” Big Blue filter housings, this premium cartridge combines KDF-55 copper-zinc media with high-grade coconut shell activated carbon for dual-stage water treatment.

This powerful cartridge reduces heavy metals (lead, mercury, arsenic, nickel, cadmium, iron), chlorine, hydrogen sulfide, pesticides, VOCs, and chemical contaminants, while also improving taste, odor, and clarity. With its extended capacity and superior filtration performance, it’s the perfect solution for whole house filtration systems, well water treatment, and municipal water supplies.


✨ Key Benefits & Features

  • 🛡️ Heavy Metal Reduction Filter – Removes lead, mercury, cadmium, nickel, arsenic, and iron for safer water.

  • 💧 Chlorine & Chloramine Removal – Eliminates chlorine, chloramines, and harmful chemical byproducts.

  • 🌱 Dual Media Filtration – KDF-55 targets metals, bacteria, and scale; coconut shell carbon polishes for taste and odor.

  • 🏠 Whole House Protection – Fits all standard 4.5" x 20” Big Blue housings for high-capacity water treatment.

  • ⏱️ Long-Lasting Performance – Provides up to 80,000–100,000 gallons or 6–12 months of filtration, depending on water conditions.

  • ♻️ Eco-Friendly & Refillable – Reusable cartridge design saves money and reduces plastic waste.

  • 🔧 Versatile Use – Compatible with both well water systems and city water supplies.


📋 Technical Specifications

Parameter Details
Model LiquaGen 4.5” x 20” Coconut Shell Carbon + KDF-55 Filter Cartridge
Size 4.5” x 20” (Big Blue Replacement Filter)
Media Type KDF-55 Copper-Zinc + Coconut Shell Carbon
Filtration Functions Heavy metals, chlorine, chloramines, iron, hydrogen sulfide, pesticides, VOCs, taste & odor
Capacity 80,000–100,000 gallons (varies by water quality)
Service Life 6–12 months (depending on usage)
Cartridge Type Drop-in, refillable
Housing Compatibility Fits all standard 4.5" x 20” Big Blue housings
Micron Rating 5 nominal
Max Pressure 125 PSI
Max Temperature 100°F (38°C)
pH Range 6–10

🏠 Applications

  • 🚰 Whole House Water Filtration – Supplies clean, safe water at every faucet.

  • 🌾 Well Water Filtration – Removes iron, sulfur, and heavy metals commonly found in well water.

  • 🏙️ Municipal Water Treatment – Eliminates chlorine, chloramines, and chemical byproducts.

  • 🛁 Appliance & Plumbing Protection – Extends the lifespan of dishwashers, washing machines, and water heaters.

  • 🥤 Food & Beverage Equipment – Delivers cleaner, better-tasting water for coffee makers, ice machines, and beverage dispensers.

  • 🐟 Aquarium & Gardening Use – Reduces harmful metals and chemicals to protect aquatic and plant life.


💙 Why Choose LiquaGen?

The LiquaGen 4.5” x 20” Coconut Shell Carbon + KDF-55 Filter Cartridge is a premium whole house replacement filter that combines heavy metal reduction, chlorine removal, and taste/odor improvement in one long-lasting cartridge. Perfect for well water and municipal water users alike, this cartridge ensures your family enjoys cleaner, fresher, and healthier water from every tap.