iSpring FC15BX4 4.5" x 10" Carbon Block Water Filter Replacement Cartridge, 5-Micron Universal Coconut Shell High Capacity CTO Filter for Under Sink and Whole House Water Filtration Systems, Pack of 4

FC15B is used as the second stage for iSpring Direct Connect under sink water filter US21B and whole house filtration system WGB21B, or the first stage of iSpring whole house filtration systems WGB21BM and WGB21B-PB. The carbon block filter consists of high-quality activated carbon. It is effective in reducing free chlorine, bad taste, odor, THM, organics, hazardous chemicals, and more. Depending on source water quality or flow rate, each cartridge needs to be replaced every 6 months or about 50, 000 gallons of water. Each filter is individually sealed to keep freshness. Fits models using standard 10" x 4.5" water filters.

• [Premium Quality Material] Using high-quality coconut shell carbon and highly compact fabrication tech, this highly activated carbon block CTO(Chlorine, Taste, and Odor) filter cartridge is designed and produced to achieve maximum filtration efficiency and filter life for 10" Whole House Water Filtration Systems. Free of surfactants, binders, and adhesives. No leaching carbon ash.
• [Exceptional Filtration Performance] Knocks out cloudiness as well as bad tastes and odors, removes up to 99% of chlorine, and is highly effective on organic compounds like herbicides and industrial solvents and other contaminants like trihalomethanes. Steady flow and high absorption.
• [Long Filter Life] 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 optimal performance, depending on the quality of source water and daily water consumption.
• [Great Compatibility] 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.
• [Peace-of-mind Customer Support] Your risk-free shopping experience is backed by a 30-day money-back guarantee, extended warranty upon registration, and lifetime tech support from iSpring in Atlanta, GA.