The 20-Inch Big Blue Carbon Block Filter Cartridge – Eco Range (500mg/g) is a cost-effective solution for improving water quality in residential and light commercial applications. Designed to reduce chlorine, unpleasant taste, odour, and certain organic compounds, this cartridge is ideal for use in whole-house water filtration, rainwater treatment, and pre-filtration for reverse osmosis systems.

Manufactured with eco-grade coconut shell activated carbon, the cartridge provides dependable performance while keeping operating costs low—perfect for general-purpose filtration needs where moderate chemical reduction is sufficient.

Key Features

• Economical Filtration Solution – Balances performance and affordability for standard water filtration needs.

• 500mg/g Iodine Rating – Removes chlorine and improves taste and odour in municipal and rainwater.

• Standard Big Blue Size – Compatible with all 20" x 4.5" Big Blue filter housings.

• Eco-Grade Coconut Shell Carbon – Effective and sustainable media for everyday water purification.

• Easy to Replace – Quick cartridge changeout with no tools required.

Technical Specifications

• Filter Type: Carbon Block

• Size: 20" x 4.5" (Big Blue Standard Size)

• Carbon Material: Coconut Shell Activated Carbon

• Iodine Number: 500mg/g

• Micron Rating: 5 Micron (Nominal)

• Chlorine Reduction: ≥ 85%

• Recommended Flow Rate: 10–15 litres per minute

• Max Operating Pressure: 6 bar

• Max Temperature: 45°C

• Service Life: ±3 to 6 months (depending on source water quality)

Applications

• Entry-level whole-house filtration

• Pre-filtration for reverse osmosis systems

• Rainwater tank systems

• Kitchen and under-counter filters

• Light commercial water treatment

What You Get

• 1 x 20-Inch Big Blue Carbon Block Filter Cartridge – Eco Range (500mg/g)

Important Notes

• Best used after a sediment pre-filter to maximise cartridge life.

• Does not remove bacteria or viruses – use with UV or Quantum Disinfection™ for microbiological protection.

• Replace cartridge every 3–6 months or when flow reduction is observed.

• Images are for reference purposes.