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Watts (WCB20FF-CHLORA) 20"x4.5" Big Blue High Performance Coconut Shell Catalytic Carbon Block for Chloramine Removal

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Watts (WCB20FF-CHLORA) 20"x4.5" Big Blue High Performance Coconut Shell Catalytic Carbon Block for Chloramine Removal

The Watts WCB20FF-CHLORA is a 20"x4.5" catalytic carbon block filter engineered specifically for chloramine reduction in whole-house applications. With 4x the chloramine capacity of standard carbon blocks and 2x the chlorine capacity, this coconut shell filter delivers up to 24,000 gallons of chloramine reduction at 2 GPM.
SPECIFICATIONS

Watts WCB20FF-CHLORA Technical Details

Dimensions 20" x 4.5" (Big Blue)
Micron Rating 1 Micron Nominal
Flow Rate 7 GPM Maximum
Chlorine Capacity 200,000+ gallons @ 4 GPM
Chloramine Capacity 24,000 gal @ 2 GPM / 12,000 gal @ 4 GPM
Media Type Coconut Shell Catalytic Carbon Block
Filter Type Standard Wall
Applications Whole-house POE, Commercial POU
INSTALLATION & USE

Installing Your Catalytic Carbon Filter

  1. Turn off water supply and relieve pressure from your 20" Big Blue housing by opening a downstream faucet
  2. Remove housing sump using a filter wrench, discard old filter, and clean the sump with mild soap and water
  3. Insert the Watts WCB20FF-CHLORA filter into the housing, ensuring it seats properly on the center post
  4. Lubricate the o-ring with silicone grease, hand-tighten the sump, and slowly turn water back on to check for leaks
  5. Flush filter for 5 minutes at low flow to remove any carbon fines before normal use
COMPATIBILITY

Housing Requirements

The WCB20FF-CHLORA fits all standard 20" x 4.5" Big Blue filter housings, including Watts, Pentek, Hydronix, and other industry-standard brands. This filter is designed for whole-house point-of-entry systems where chloramine removal is required, particularly in municipal water systems that have switched from chlorine to chloramine disinfection. The 1 micron nominal filtration also provides sediment and particulate reduction alongside chemical contaminant removal.

🔧 Pro Tip: Chloramine reduction rates drop significantly at higher flow rates. If you have high household demand, consider installing two filters in parallel to maintain 2 GPM per filter and maximize your 24,000 gallon capacity per cartridge.
The Watts WCB20FF-CHLORA is a 20"x4.5" catalytic carbon block filter engineered specifically for chloramine reduction in whole-house applications. With 4x the chloramine capacity of standard carbon blocks and 2x the chlorine capacity, this coconut shell filter delivers up to 24,000 gallons of chloramine reduction at 2 GPM.
SPECIFICATIONS

Watts WCB20FF-CHLORA Technical Details

Dimensions 20" x 4.5" (Big Blue)
Micron Rating 1 Micron Nominal
Flow Rate 7 GPM Maximum
Chlorine Capacity 200,000+ gallons @ 4 GPM
Chloramine Capacity 24,000 gal @ 2 GPM / 12,000 gal @ 4 GPM
Media Type Coconut Shell Catalytic Carbon Block
Filter Type Standard Wall
Applications Whole-house POE, Commercial POU
INSTALLATION & USE

Installing Your Catalytic Carbon Filter

  1. Turn off water supply and relieve pressure from your 20" Big Blue housing by opening a downstream faucet
  2. Remove housing sump using a filter wrench, discard old filter, and clean the sump with mild soap and water
  3. Insert the Watts WCB20FF-CHLORA filter into the housing, ensuring it seats properly on the center post
  4. Lubricate the o-ring with silicone grease, hand-tighten the sump, and slowly turn water back on to check for leaks
  5. Flush filter for 5 minutes at low flow to remove any carbon fines before normal use
COMPATIBILITY

Housing Requirements

The WCB20FF-CHLORA fits all standard 20" x 4.5" Big Blue filter housings, including Watts, Pentek, Hydronix, and other industry-standard brands. This filter is designed for whole-house point-of-entry systems where chloramine removal is required, particularly in municipal water systems that have switched from chlorine to chloramine disinfection. The 1 micron nominal filtration also provides sediment and particulate reduction alongside chemical contaminant removal.

🔧 Pro Tip: Chloramine reduction rates drop significantly at higher flow rates. If you have high household demand, consider installing two filters in parallel to maintain 2 GPM per filter and maximize your 24,000 gallon capacity per cartridge.
$98.24

Original: $280.69

-65%
Watts (WCB20FF-CHLORA) 20"x4.5" Big Blue High Performance Coconut Shell Catalytic Carbon Block for Chloramine Removal—

$280.69

$98.24

Description

The Watts WCB20FF-CHLORA is a 20"x4.5" catalytic carbon block filter engineered specifically for chloramine reduction in whole-house applications. With 4x the chloramine capacity of standard carbon blocks and 2x the chlorine capacity, this coconut shell filter delivers up to 24,000 gallons of chloramine reduction at 2 GPM.
SPECIFICATIONS

Watts WCB20FF-CHLORA Technical Details

Dimensions 20" x 4.5" (Big Blue)
Micron Rating 1 Micron Nominal
Flow Rate 7 GPM Maximum
Chlorine Capacity 200,000+ gallons @ 4 GPM
Chloramine Capacity 24,000 gal @ 2 GPM / 12,000 gal @ 4 GPM
Media Type Coconut Shell Catalytic Carbon Block
Filter Type Standard Wall
Applications Whole-house POE, Commercial POU
INSTALLATION & USE

Installing Your Catalytic Carbon Filter

  1. Turn off water supply and relieve pressure from your 20" Big Blue housing by opening a downstream faucet
  2. Remove housing sump using a filter wrench, discard old filter, and clean the sump with mild soap and water
  3. Insert the Watts WCB20FF-CHLORA filter into the housing, ensuring it seats properly on the center post
  4. Lubricate the o-ring with silicone grease, hand-tighten the sump, and slowly turn water back on to check for leaks
  5. Flush filter for 5 minutes at low flow to remove any carbon fines before normal use
COMPATIBILITY

Housing Requirements

The WCB20FF-CHLORA fits all standard 20" x 4.5" Big Blue filter housings, including Watts, Pentek, Hydronix, and other industry-standard brands. This filter is designed for whole-house point-of-entry systems where chloramine removal is required, particularly in municipal water systems that have switched from chlorine to chloramine disinfection. The 1 micron nominal filtration also provides sediment and particulate reduction alongside chemical contaminant removal.

🔧 Pro Tip: Chloramine reduction rates drop significantly at higher flow rates. If you have high household demand, consider installing two filters in parallel to maintain 2 GPM per filter and maximize your 24,000 gallon capacity per cartridge.

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