Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5"

Pentair Pentek GAC Series Cartridges effectively reduce unwanted taste and odors, including chlorine taste & odor from your drinking water. Designed to allow maximum contact between the water and carbon ensuring optimal adsorption. The construction of the cartridge allows water to enter at one end and pass through the entire length of the carbon bed before exiting the other end of the cartridge, while an internal expansion pad minimizes channeling or bypass. Before the water exits the cartridge, a post-filter helps reduce carbon fines and other suspended particles from the filtered water. The post-filter is permanently fastened eliminating any potential for bypass. For best results, especially in high flow/high sediment applications, we suggest you team up a GAC post-filter with a Fibredyne pre-filter (Pentair Pentek FloPlus-20BB, EP-20BB, or C1-20BB) or an Extruded Carbon Block pre-filter (Pentair Pentek RFC-20BB or NCP-20BB).

• EFFECTIVE REDUCTION OF BAD TASTE & ODORS to provide good general-purpose drinking water
• FITS ALL 20" Pentair Pentek Big Blue or other 20" heavy duty housings and can replace any 20" x 4.5" carbon filter cartridge
• POST-FILTER HELPS REDUCE CARBON FINES and other suspended particles from the filtered water
• NSF INTERNATIONAL tested and certified for your peace of mind
• 25,000 GALLON CAPACITY. Replace every six months or when you notice a drop in water pressure or water quality