## Big Blue Triple Filter Service Kit – 20″ × 4.5″
Keep your whole house water filtration system performing at its best with our Big Blue Triple Filter Service Kit. This convenient replacement kit includes three premium 20″ × 4.5″ filter cartridges and two housing O-rings. Together, these components provide a practical maintenance solution for compatible triple-stage Big Blue filtration systems.
## Three-Stage Water Filtration
### Stage 1 – 5 Micron Pleated Washable Sediment Filter
The first stage captures sediment, dirt, sand, rust and other suspended particles. Its pleated design provides a large filtration surface area, helping maintain water flow while reducing sediment entering the following stages.
Additionally, the washable design allows the cartridge to be cleaned and reused where appropriate, helping extend its service life.
### Stage 2 – 5 Micron Carbon Block Filter
The second stage uses a 5 micron carbon block cartridge to help reduce chlorine, unpleasant tastes and odours. As a result, it improves the aesthetic quality of suitable water supplies.
Furthermore, this stage provides additional fine particulate filtration before water passes through the final cartridge.
### Stage 3 – Silver Impregnated Antibacterial Filter
The third stage features a silver impregnated antibacterial cartridge. Silver impregnation helps inhibit bacterial growth within the filter media, supporting cartridge hygiene.
However, this cartridge is not a substitute for a validated disinfection system where microbiologically unsafe water requires treatment.
## Replacement Housing O-Rings
The kit also includes two replacement O-rings designed for compatible 20″ × 4.5″ Big Blue housings. These help maintain a secure seal when the housings are correctly assembled.
Before installation, check the O-ring dimensions and housing compatibility to ensure a suitable fit.
## Why Choose This Big Blue Triple Filter Service Kit?
Our Big Blue Triple Filter Service Kit brings three replacement filtration stages together in one convenient package. Therefore, you can service your compatible triple-stage system without purchasing each cartridge separately.
The combination of washable sediment filtration, carbon block filtration and silver impregnated media supports routine whole house water filter maintenance.
For best results, follow your system manufacturer’s recommended cartridge replacement schedule. Additionally, always select filtration and disinfection suitable for your water source and water quality.
## Shop Online with Aus Water Tanks
Aus Water Tanks supplies water filtration products and replacement cartridges for homes and properties across Australia. We offer Australia-wide delivery, making it easy to order your next service kit online.
Shop online and save with Aus Water Tanks.

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