20"x4.5" Big Blue Whole House Mains Water Filter Housing - Excludes Bracket, Spanner, Filters BB20

20"X4.5" BIG BLUE WHOLE HOUSE MAINS WATER FILTER HOUSING - EXCLUDES BRACKET, SPANNER, FILTERS BB20

Whole house mains water filter housing built with solid materials to ensure reliability and long-lasting reliability.

Upgrade your water filtration setup with this premium-grade 20" x 4.5" Big Blue Water Filter Housing, engineered for high-flow applications in residential, commercial, rural, and agricultural settings.

Protective covers for our Big Blue Whole House Filters are available in our store; just search
"protective cover"

Some images in this listing may show items that are not included in the sale. They are there for information, to show how the product is used with other products or to show related products. If you have any doubt about what is included, just send us a quick message and we'll confirm and clarify for you.

✅ Key Features:

• 1" BSP Inlet & Outlet Ports – Compatible with most standard plumbing setups for easy installation.

• Stainless Steel Threaded Ports – Durable, rust-resistant connections for long-term reliability.

• Pressure Relief Valve Button – Easily release internal pressure during cartridge changes.

✅ WaterMark Certified for Mains Water Installation:

If selected this housing is WaterMark certified, meeting Australian standards for installations connected to mains water supplies or in pressurised tank systems. Certification ensures safety, performance, and compliance.

Note: Certification is not required for non-pressurised systems used in rural, agricultural, or off-grid water filtration setups, where the unit is downstream of a manually operated tap or valve.

✅ Universal Cartridge Compatibility:

• Accommodates all standard 20” x 4.5” Big Blue water filter cartridges, including:

  • Sediment filters

  • Carbon block filters

  • Iron/manganese removal filters

  • Specialty filters for bore, rain, and tank water

✅ Mounting Bracket Options:

• Brackets match those shown in the listing images

• Available in:

  • White painted mild steel (includes four galvanized mounting screws)

  • Marine-grade stainless steel (includes four 316 stainless steel screws)

✅ Heavy-Duty Housing Spanner:

• Includes a robust spanner tool (as shown in the listing images) for secure, easy filter housing  opening for filter removal and maintenance.

✅ Safe, Non-Toxic Construction:

• All water-contact parts are made from BPA-free, food-grade plastic, ensuring clean, safe drinking water.

✅ Warranty & Quality Guarantee:

• Comes with a 12-month warranty covering all components supplied with the original purchase.

• All filters and parts are sourced to meet or exceed Australian quality standards.

⚠️ Regulatory Compliance Notice:

As per Australian standards, any water filter system under constant water pressure must be installed with an AS3497-approved pressure-reducing valve and a backflow prevention device to ensure system safety and regulatory compliance.