This 20" Big Blue refillable cartridge is pre-packed with high-quality GAC (Granular Activated Carbon) and KDF media, designed for effective chlorine, chemical, heavy metal, and odour removal in high-flow water treatment systems. The refillable design allows for easy replacement of media, reducing long-term costs and plastic waste. Ideal for residential, commercial, and light industrial filtration systems where performance, reusability, and affordability are important.

The cartridge fits all standard 20” Big Blue filter housings and is commonly used as part of multi-stage treatment systems for borehole, rainwater, or municipal water supply.

• Key Features

• 20” refillable cartridge filled with a GAC/KDF blend
• Effectively reduces chlorine, heavy metals (lead, mercury, nickel), hydrogen sulphide, and odour
• Granular Activated Carbon (GAC) for chemical adsorption and taste/odour removal
• KDF media inhibits bacterial growth and reduces heavy metals
• Polypropylene outer shell with refillable cap and internal post-filter screens
• Compatible with all standard 20” Big Blue housings
• Reusable design – simply empty and refill when media is exhausted
• Long service life depending on water quality and flow rate

✓ Benefits

✓ Cost-effective long-term filtration – replace media, not the housing
✓ Reduces reliance on single-use cartridges
✓ Protects downstream filters and appliances from chemical wear and scaling
✓ Effective chlorine, odour, and metal reduction improves taste and water safety
✓ Commonly used in borehole, rainwater, and municipal water systems
✓ Refillable housing supports custom media blending if required

Technical Specifications

• Cartridge Type: Refillable Big Blue Cartridge
• Size: 20” (for Big Blue housing)
• Outer Shell Material: Polypropylene (refillable cap design)
• Filter Media: Granular Activated Carbon (GAC) & KDF 55
• End Caps: Threaded removable cap with sealing ring
• Micron Rating: Not rated for particulate filtration – for chemical reduction only
• Temperature Range: 4 – 52°C
• Service Life: Varies with inlet water quality and flow rate – typically 6–12 months
• Flow Direction: Top to bottom with internal mesh post-filter screens
• Housing Compatibility: Fits standard 20” Big Blue filter housings

What You Get

1 × 20” Big Blue refillable cartridge pre-filled with GAC/KDF media
Includes internal mesh screens and threaded refill cap
Ready to install in any standard 20” Big Blue filter housing