Del Mar Big Blue 20" X 4.5" Carbon Block Replacement Filter Tanks 5" Carbon Block Replacement Filters

5" Carbon Block Replacement Filters offer the highest level of chlorine reduction with their uniquely designed coconut shell-activated carbon blocks

This size tank is called 2 gallon by the manufacturer

Friction-Welded Construction Provides a Reliable

Tanks are sold as replacement parts

it holds about 1 gallon

Del Mar Big Blue 20" X 4.5" Carbon Block Replacement Filter Tanks 5" Carbon Block Replacement FiltersDel Mar Big Blue 20" X 4. 5" Carbon Block Replacement Filters offer the highest level of chlorine reduction with their uniquely designed coconut shell activated carbon blocks. Get purer drinking water with the effective reduction of bad tastes and odors. Perfect for standard 20" Big Blue Style filters.