🌊 Product Overview
The LiquaGen 4.5” x 20” GAC/UDF + KDF 55 + KDF 85 Filter Cartridge is a high-capacity Big Blue whole-house filter designed to protect your family, plumbing, and appliances from chlorine, heavy metals, iron, hydrogen sulfide (rotten egg odor), and unpleasant tastes or smells.
Built with Granular Activated Carbon (GAC/UDF) for superior taste and odor control, plus KDF 55 and KDF 85 media for heavy metal, iron, and sulfur reduction, this cartridge delivers maximum contaminant removal and long service life. Its oversized 4.5” x 20” format provides the highest media volume, flow rate, and protection in the LiquaGen cartridge lineup—ideal for large households and high water demand.
✨ Key Benefits & Features
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💧 Whole-House Chlorine Reduction – Effectively removes chlorine, chloramines, VOCs, and organics.
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🛡️ Heavy Metal Filtration – KDF 55 targets lead, mercury, cadmium, and nickel for safer water.
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🔩 Iron & Sulfur Control – KDF 85 reduces iron and hydrogen sulfide, eliminating metallic taste and rotten egg odor.
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🌱 Bacteriostatic Media – Naturally inhibits bacterial growth inside the cartridge.
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🔧 Big Blue 20” Fit – Compatible with all 4.5” x 20” whole-house housings.
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⏱️ Maximum Service Life – Largest capacity cartridge means fewer replacements and more reliable whole-home coverage.
📋 Technical Specifications
| Parameter | Details |
|---|---|
| Model | LiquaGen 4.5” x 20” GAC/UDF + KDF 55 + KDF 85 Cartridge |
| Size | 4.5” x 20” (Big Blue Cartridge) |
| Media Types | Granular Activated Carbon + KDF 55 + KDF 85 |
| Primary Functions | Reduces chlorine, iron, hydrogen sulfide, heavy metals, taste & odor |
| Micron Rating | 5 nominal |
| Capacity | ~7,500–10,000 gallons (varies by water quality) |
| Recommended Lifespan | 9–12 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
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🚰 Whole-House Filtration – Supplies chlorine- and contaminant-free water to every faucet.
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🚿 Bathrooms – Reduces chlorine and sulfur odors for healthier showers.
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🧺 Laundry – Prevents water-related staining and chlorine damage to fabrics.
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🍳 Kitchen & Cooking – Improves taste in drinking water, coffee, tea, and meals.
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🏠 Appliance Protection – Extends the life of dishwashers, water heaters, and washing machines.
💙 Why Choose LiquaGen?
The LiquaGen 4.5” x 20” GAC/UDF + KDF 55 + KDF 85 Filter Cartridge is the largest and most durable option in the series, delivering maximum chlorine, heavy metal, iron, and sulfur reduction for whole-house systems. With its oversized Big Blue format, it ensures cleaner, safer water for large homes and high-demand households