iSpring FC15BX4 4.5x10 in. 5 micron Carbon Block (CTO) Water Filter Replacement Cartridge for Under Sink and Whole House Water Filtration Systems, Pack of 4

Using quality coconut shell carbon and highly compact fabrication tech, this activated carbon block CTO(Chlorine, Taste, and Odor) filter cartridge is designed and produced to achieve filtration efficiency and long filter life for 10" Whole House and Undersink Water Filtration Systems. Free of surfactants, binders, and adhesives. No leaching carbon ash.

Knocks out cloudiness as well as bad tastes and odors, removes up to 99% of chlorine, and is effective on herbicides and industrial solvents and other contaminants like trihalomethanes. Steady flow and high absorption.

Each cartridge filters up to 50,000 gallons depending on the use and feed water quality. Replace the filter every 6 months or every 50,000 gallons of water for ideal performance, depending on the quality of source water and daily water consumption.

Fits standard 10"x4.5" filters. Official 2nd stage Carbon Block replacement filter cartridge for iSpring under sink water filter US21B and whole house water filtration system WGB21B; 1st stage for WGB21BM and WGB21B-PB. All 4 cartridges are individually sealed for freshness.

Your iSpring shopping experience is backed by a 30-day money-back guarantee, extended warranty upon registration, and lifetime tech support from iSpring in Atlanta, GA at (678) 261-7611.

  • Out of Stock | ETA: Nov/21/2019
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Why iSpring?

At iSpring, we look beyond technology to make high-quality drinking water accessible for all households. We provide our customers with professional water solutions to any water concerns you may have.

ispring water filter

Outstanding Performance

The FC15B carbon block filters are made of high-quality coconut shell carbon and are specially designed to remove up to 99% of chlorine from water as well as various other contaminants that cause unpleasant odors and tastes.

whole house replacement water filters

High Capacity x 4

Each FC15B CTO Carbon Block filter has a filtration capacity of up to 50,000 gallons of water. This economical pack of 4 FC15B filters provides a family of four with clean water for up to 2 years.

whole house water filter

Safe Water For the Ones You Love

Save on your water bill - the filters won’t produce any wastewater.

Official 2nd stage filter for iSpring under sink water filter US21B and whole house water filtration system WGB21B; 1st stage for WGB21BM and WGB21B-PB.

Fits standard 10” x 4.5” filter housings.

Unlike an RO membrane, the CTO filters don’t reduce Total Dissolved Solids (TDS). They keep healthy minerals in your water instead. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis (RO) systems such as RCC7 series and tankless RO systems like RO500.

  • Availability: Out of Stock | ETA: Nov/21/2019
  • Model: FC15BX4
  • Manufacturer: iSpring
John Anthony | 5 out of 5 Stars!

Great value for quality carbon filter.

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