About the product
- GREATER CHLORINE TASTE and ODOR REDUCTION than competitive 10 carbon blocks
- FITS ALL 20" Big Blue or other heavy duty housings and can replace any 20" x 4.5" carbon filter cartridge
- HIGH POROSITY DESIGN helps the cartridge from plugging before its adsorption capacity is exhausted
- NSF INTERNATIONAL tested and certified for your peace of mind
- 44,000 GALLON CAPACITY. Replace every year or when you notice a drop in water pressure or water quality
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