Pentek - ChlorPlus-20BB - 20" x 4.5" Chloramine Carbon Block Filter
ChlorPlus-20BB 20" x 4.5" Chloramine Carbon Block Filter
Engineered specifically for chloramine reduction in municipal water systems, the ChlorPlus-20BB delivers superior performance over granular carbon with minimal fines and extended capacity in 20" Big Blue housings.
Built for chloramine removal where GAC falls short
Chloramine-Specific Formula
Catalytic carbon block designed to break the chlorine-ammonia bond that standard activated carbon struggles with in municipal water treatment.
Solid Block Construction
Extruded carbon block eliminates channeling and carbon fines while providing true 1 micron sediment filtration alongside chemical reduction.
High Flow, Long Life
Rated for 500,000 gallons at 4.0 GPM flow rate, delivering reliable whole-house or commercial filtration without frequent changeouts.
Big Blue Platform
Fits standard 20" Big Blue filter housings from Pentek and compatible brands, making retrofits and upgrades straightforward.
Housing requirements
The Pentek ChlorPlus-20BB requires a 20" x 4.5" Big Blue filter housing with 1" NPT ports. Compatible with Pentek 20-BB series housings, Hydronix HF-20BB housings, and other standard 20" sump-style housings rated for whole-house or commercial flow rates. Ensure housing is rated for your system pressure and flow requirements.
Replacement schedule
Municipal Water
Replace annually for typical whole-house applications on chloramine-treated city water with moderate use (2-4 people).
High Demand
Replace every 9 months for larger households, commercial applications, or high chloramine levels (above 3 ppm combined chlorine).
Performance Monitoring
Test treated water periodically for chloramine breakthrough. Replace filter when chloramine or taste/odor returns, or pressure drop exceeds 15 psi.
True Chloramine Reduction
Catalytic carbon specifically targets monochloramine and dichloramine that standard GAC can't handle effectively.
1 Micron Sediment Filtration
Dual-action design removes particulate down to 1 micron while reducing chemicals, protecting downstream equipment.
Commercial Grade
Built for whole-house and light commercial applications where flow rate and contaminant load demand more than residential cartridges.
No Carbon Fines
Solid block eliminates the black water and carbon dust common with granular filters during startup and use.
ChlorPlus-20BB 20" x 4.5" Chloramine Carbon Block Filter
Engineered specifically for chloramine reduction in municipal water systems, the ChlorPlus-20BB delivers superior performance over granular carbon with minimal fines and extended capacity in 20" Big Blue housings.
Built for chloramine removal where GAC falls short
Chloramine-Specific Formula
Catalytic carbon block designed to break the chlorine-ammonia bond that standard activated carbon struggles with in municipal water treatment.
Solid Block Construction
Extruded carbon block eliminates channeling and carbon fines while providing true 1 micron sediment filtration alongside chemical reduction.
High Flow, Long Life
Rated for 500,000 gallons at 4.0 GPM flow rate, delivering reliable whole-house or commercial filtration without frequent changeouts.
Big Blue Platform
Fits standard 20" Big Blue filter housings from Pentek and compatible brands, making retrofits and upgrades straightforward.
Housing requirements
The Pentek ChlorPlus-20BB requires a 20" x 4.5" Big Blue filter housing with 1" NPT ports. Compatible with Pentek 20-BB series housings, Hydronix HF-20BB housings, and other standard 20" sump-style housings rated for whole-house or commercial flow rates. Ensure housing is rated for your system pressure and flow requirements.
Replacement schedule
Municipal Water
Replace annually for typical whole-house applications on chloramine-treated city water with moderate use (2-4 people).
High Demand
Replace every 9 months for larger households, commercial applications, or high chloramine levels (above 3 ppm combined chlorine).
Performance Monitoring
Test treated water periodically for chloramine breakthrough. Replace filter when chloramine or taste/odor returns, or pressure drop exceeds 15 psi.
True Chloramine Reduction
Catalytic carbon specifically targets monochloramine and dichloramine that standard GAC can't handle effectively.
1 Micron Sediment Filtration
Dual-action design removes particulate down to 1 micron while reducing chemicals, protecting downstream equipment.
Commercial Grade
Built for whole-house and light commercial applications where flow rate and contaminant load demand more than residential cartridges.
No Carbon Fines
Solid block eliminates the black water and carbon dust common with granular filters during startup and use.
Original: $298.16
-65%$298.16
$104.36Description
ChlorPlus-20BB 20" x 4.5" Chloramine Carbon Block Filter
Engineered specifically for chloramine reduction in municipal water systems, the ChlorPlus-20BB delivers superior performance over granular carbon with minimal fines and extended capacity in 20" Big Blue housings.
Built for chloramine removal where GAC falls short
Chloramine-Specific Formula
Catalytic carbon block designed to break the chlorine-ammonia bond that standard activated carbon struggles with in municipal water treatment.
Solid Block Construction
Extruded carbon block eliminates channeling and carbon fines while providing true 1 micron sediment filtration alongside chemical reduction.
High Flow, Long Life
Rated for 500,000 gallons at 4.0 GPM flow rate, delivering reliable whole-house or commercial filtration without frequent changeouts.
Big Blue Platform
Fits standard 20" Big Blue filter housings from Pentek and compatible brands, making retrofits and upgrades straightforward.
Housing requirements
The Pentek ChlorPlus-20BB requires a 20" x 4.5" Big Blue filter housing with 1" NPT ports. Compatible with Pentek 20-BB series housings, Hydronix HF-20BB housings, and other standard 20" sump-style housings rated for whole-house or commercial flow rates. Ensure housing is rated for your system pressure and flow requirements.
Replacement schedule
Municipal Water
Replace annually for typical whole-house applications on chloramine-treated city water with moderate use (2-4 people).
High Demand
Replace every 9 months for larger households, commercial applications, or high chloramine levels (above 3 ppm combined chlorine).
Performance Monitoring
Test treated water periodically for chloramine breakthrough. Replace filter when chloramine or taste/odor returns, or pressure drop exceeds 15 psi.
True Chloramine Reduction
Catalytic carbon specifically targets monochloramine and dichloramine that standard GAC can't handle effectively.
1 Micron Sediment Filtration
Dual-action design removes particulate down to 1 micron while reducing chemicals, protecting downstream equipment.
Commercial Grade
Built for whole-house and light commercial applications where flow rate and contaminant load demand more than residential cartridges.
No Carbon Fines
Solid block eliminates the black water and carbon dust common with granular filters during startup and use.
