Bluonics 4.5"x20" Whole House Water Filter Replacement Solid Blue Canister-Cap not included
✔ Trusted by 200,000+ U.S. homeowners
✔ Over 10 years of proven water filtration experience
- Fits Bluonics standard size 4.5”x20" and 4.5"x10" Big Blue White Caps
- Heavy-duty Solid Blue Construction with O Ring Seal Gasket. Standard size US NPT 1" Brass Ports for high flow applications. Easily installs at the main water supply for your whole house water filtration needs.
The Bluonics 4.5"x20" Whole House Water Filter Replacement Solid Blue Canister-Cap not included is a sensational customer favorite, and we hope you like it just as much.
Inventory Last Updated: Jun 13, 2026
Inventory Last Updated: Jun 13, 2026