This 20" x 4.5" anti bacterial water filter is designed for whole house water filter systems, rainwater tank filtration and high-flow residential or light commercial use.
The FIB-BB20-5 filter cartridge helps reduce common water impurities such as dirt, rust, algae, sediment and fine particles before the water enters your home or filtration system. With a 5 micron filtration rating, it is suitable as a pre-filter for whole house systems, rainwater tank systems, pumps, carbon filters, UV systems and other water treatment equipment.
This filter is made for standard 20" x 4.5" Big Blue style housings. The cartridge measures approximately 510 mm x 117 mm and is suitable for applications where higher flow and larger dirt-holding capacity are required compared with standard slimline filters.
The anti-bacterial inhibit media is designed to help reduce bacterial growth inside the filter cartridge and support cleaner system performance. Regular replacement is recommended depending on water quality, usage level and system condition.
Product details:
Size: 20" x 4.5"
Model: FIB-BB20-5
Micron rating: 5 micron
Approx. dimensions: 510 mm x 117 mm
Suitable for: Whole house systems, rainwater tank systems and Big Blue filter housings
Compatible Models
Please refer to the product description above for compatible filter numbers, refrigerator models and system model information.
Need Help Confirming Compatibility?
If you cannot find your model number or are unsure whether this product is suitable for your refrigerator or filtration system, please contact us before purchasing.
Contact Us for Compatibility SupportGeneral Installation Guide
Please use the general guide below to help identify your filter type and follow the correct replacement process. Filter location and replacement steps may vary depending on your refrigerator or water filtration system model. Always refer to your appliance manual for the exact filter location and specific instructions.
Need Help Finding the Correct Filter?
Before ordering, compare your old filter, check the model number or filter code and confirm the connector type. If you are unsure, please contact Water Filter Distributors for assistance.
Whole House System Installation Manual
For whole house filtration systems, please refer to the detailed installation manual below. Professional installation by a licensed plumber is recommended.
View Whole House Installation ManualTwin Cartridge Under Sink Installation Guide
For twin cartridge under sink systems, please refer to the installation guide below. This guide is suitable for systems supplied with a dedicated faucet, diverter valve, tubing and installation kit.
Important Installation Notes
- Filter location and replacement steps may vary depending on your appliance or filtration system model.
- Always compare the new filter with your existing filter before installation.
- Remove all protective caps, plugs and packaging before installation.
- Flush approximately 5–10 litres or 3–5 minutes of water after installing the new filter.
- Use with cold potable water only unless the product instructions specifically state otherwise.
- Check all connections carefully for leaks after installation.
- Always follow your appliance manufacturer's instructions where applicable.
Need Installation Assistance?
If you are unsure how to install this product, please send us your refrigerator model number, filtration system model number or a clear photo of your existing filter and connections.
Contact Us for Installation SupportCertification & Quality Assurance
Water Filter Distributors is operated by Mexi Trading Pty Ltd, an Australian owned and operated company. Our products are supplied with a strong focus on quality, safety and trusted filtration performance.
Important Certification Notice
- Certification details may vary depending on the specific product model.
- Please refer to the product description, packaging or official documentation for model-specific certification information.
- If you require confirmation for a specific product, please contact Water Filter Distributors before purchasing.