4.5 X 20 Inch Carbon Block Filter Cartridge, 5 Micron Coconut Shell CTO, Whole House Well Water Filtration, Removes Chlorine And Other Chemicals For Clean Taste, Fits Big Blue Housings DB20P CTO20BB Style 2 Pack

Clean-tasting water with a 4.5 x 20 carbon block filter
✔️ 4.5 x 20 inch CTO carbon block, 5 micron, coconut shell, 2-pack

This carbon block cartridge is designed for whole-house filtration. It fits standard 20" x 4.5" housings (Big Blue style) and reduces chlorine and other chemicals to improve taste and odor across the entire home water supply.

✅ 4.5 x 20 inch coconut shell CTO carbon block filter cartridge
✅ 5 micron rating for chlorine and chemical removal
✅ Fits standard 20 inch x 4.5 inch whole-house housings including Big Blue DB20P
✅ 2-pack replacement for ongoing filtration needs
✅ Interchangeable with FC25B, CB-BB-20, CBC-20BB and more

💡 What is a coconut shell carbon block filter and why is it used in a whole-house system?

It's a handy, effective way to reduce chlorine and chemicals for your entire home's water supply.

- chlorine removal for cleaner drinking water
- coconut shell carbon block offers strong adsorption of organics
- fits 20" x 4.5" housings for easy installation in existing systems
- compatible with common replacement filters for straightforward swaps