20” x 4.5” Whole House Water Filter System
2–3 Stage | WaterMark Certified | High Flow Rate | Powerful Cyst, Scale, Chlorine, Fluoride & Lead Removal | Ideal for Rain Tank, Hard Water & Town Water
Application
Perfect for households using rainwater tanks or town water—especially where chlorine, sediment, heavy metals, or odour are a concern. Also ideal for areas with hard water or potential cyst contamination. Suitable for homes, offices, and light commercial applications that demand high-performance, whole-house protection.
Product Introduction
This heavy-duty whole house filtration system is purpose-built for Australian water conditions. It features WaterMark-certified housings, 1" BSP brass ports, and double O-ring seals to ensure leak-free durability. The 20” x 4.5” Big Blue housings provide high flow rates and longer cartridge life—perfect for large families and high-demand households.
The system is available in three 3-stage configurations and one compact 2-stage option, offering flexibility across different installation styles and budgets:
| Configuration |
3-Stage Wall Mount + Cover |
3-Stage Free-Standing + Cover |
3-Stage Wall Mount (No Cover) |
2-Stage Wall Mount (No Cover) |
| Mounting Style |
Wall-mount only |
Free-standing or wall-mount |
Wall-mount only |
Wall-mount only |
| Cover Type |
UV-resistant stainless steel |
UV-resistant stainless steel |
No cover |
No cover |
| Cartridge Sets |
1 set |
2 sets |
1 set |
1 set |
| System Size (W x D x H) |
58 x 20 x 65 cm |
60 x 20 x 74 cm |
57 x 20 x 65 cm |
38 x 20 x 65 cm |
| Notes |
Suitable for outdoor wall installations |
Ideal for garages or undercover outdoor use |
⚠️ For garage or undercover areas only – avoid direct sunlight |
⚠️ Indoor or shaded installation recommended |
🧪 Filter Cartridge Combination
3-Stage Models
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Stage 1: Shield® 5–1 Micron Grooved Sediment Filter
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Stage 2: Shield® 1 Micron Coconut Carbon Block Filter
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Stage 3: Hydrotech® 0.22 Micron Carbon Block Filter
2-Stage Model (No Stage 2 carbon filter)
🛡 These filters target:
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✔ Fine sediment, rust, and dirt
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✔ Chlorine, taste, and odours
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✔ Heavy metals such as lead
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✔ Cysts (Giardia, Cryptosporidium)
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✔ Fluoride and Scale
📦 Package Includes:
✔ 1 x 2-Stage or 3-Stage Filter Housing System (fits 20” x 4.5” Big Blue cartridges)
✔ Stainless Steel Cover / Bracket / Frame (based on selected version)
✔ 1 or 2 Sets of Filter Cartridges (based on configuration)
✔ 3 x Pressure Gauges for 3-stage models / 2 x Gauges for 2-stage model
✔ 1 x Filter Wrench – for easy cartridge replacement
Why Choose This System?
Designed for Australia’s challenging water quality, this robust system offers unmatched filtration for households using rainwater, hard water, or chlorinated town supply. Its modular design gives you the freedom to choose between compact 2-stage or full-featured 3-stage setups—both delivering powerful performance against sediment, chemicals, metals, cysts, and more.
✔ Removes chlorine, cysts, fluoride, scale, lead, and taste/odour
✔ Built for high flow and long service life
✔ Available in 2-stage or 3-stage configurations
✔ Outdoor-ready with stainless steel protection
✔ Certified to Australian WaterMark standard
