4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)
LiquaGen Water

4.5" x 20" GAC/UDF Filter Cartridge (Chlorine Taste Water Reduction)

Regular price $74.00 Sale price $54.99

🌊 Product Overview

The LiquaGen 4.5” x 20” Granular Activated Carbon (GAC/UDF) Filter Cartridge is a high-capacity Big Blue cartridge designed for whole-house and heavy-use applications. Made from premium coconut shell carbon granules, it provides exceptional reduction of chlorine, volatile organic compounds (VOCs), pesticides, halides, industrial chemicals, taste, and odor, delivering safer, cleaner, and better-tasting water throughout your home.

With its 4.5” diameter and 20” length, this cartridge holds more carbon media for longer life, higher flow rates, and maximum contaminant adsorption, making it ideal for large households, high-demand usage, and light commercial applications.


✨ Key Benefits & Features

  • 💧 Advanced Chlorine & VOC Reduction – Removes chlorine, halides, VOCs, pesticides, and harmful chemicals.

  • 🛡️ Improves Water Taste & Odor – Restores freshness to drinking, cooking, and household water.

  • 🌱 Coconut Shell Carbon – Laboratory-cleaned and vacuum-heated for maximum adsorption efficiency.

  • 🔧 Big Blue 20” Fit – Compatible with all standard 4.5” x 20” Big Blue filter housings.

  • 🚿 Whole-House Protection – High-capacity filtration for faucets, showers, appliances, and laundry.

  • ⏱️ Extended Lifespan – Filters more water and lasts longer than shorter cartridges.

  • 🔒 Reliable Build – Precision-sealed design prevents leaks, channeling, or bypass.


📋 Technical Specifications

Parameter Details
Model LiquaGen 4.5” x 20” GAC/UDF Filter Cartridge
Size 4.5” x 20” (Big Blue Cartridge)
Media Type Coconut Shell Granular Activated Carbon
Primary Functions Chlorine, VOC, taste, odor, and chemical reduction
Micron Rating 5 nominal
Capacity ~15,000–20,000 gallons (varies by water quality)
Recommended Lifespan 4–6 months
Max Pressure 90 PSI (6.2 bar)
Operating Temp. 40–100°F (4.4–37°C)
Housing Compatibility Fits all standard 4.5" x 20” Big Blue housings

🏠 Applications

  • 🚰 Whole-House Filtration – Provides fresh, chlorine-free water to every faucet, shower, and appliance.

  • 🧊 Kitchen & Cooking – Enhances food and beverage flavor by removing chemicals and odors.

  • 🚿 Bathroom & Laundry – Improves shower water and prevents chlorine exposure in skin and clothing.

  • 🏠 Appliance Protection – Extends the lifespan of dishwashers, washing machines, coffee makers, and water heaters.

  • 🏢 Light Commercial Use – Ideal for cafés, restaurants, offices, and small businesses needing high-volume clean water.


💙 Why Choose LiquaGen?

The LiquaGen 4.5” x 20” GAC/UDF Filter Cartridge offers maximum carbon capacity and whole-house performance in a universal Big Blue design. With its premium coconut shell carbon, it captures chlorine, VOCs, and odors while delivering long-lasting protection and fresher water for every tap. With LiquaGen, your home and family get cleaner, safer, and healthier water.