20" x 4.5" Big Blue Filter Element Replacement Set

Affordable Replacement Filter Cartridges for Big Blue Housings

Need to replace the filter cartridges in your Big Blue Filter Housing or UV Water Sterilizer system? This set gives you our best per-filter pricing and covers a full two-stage replacement.

Each set includes:

• (2) 5-Micron Sediment Filters — first stage
• (2) 5-Micron Carbon Block Filters — second stage

All filters measure 20" x 4.5". They are ideal pre-filters for systems using rainwater or spring water as the supply, and are required upstream of any UV sterilizer.

How to Replace Your Filters

Big Blue filter cartridge replacement — step-by-step walkthrough