Filter Packs for US21B/US21B-CPB
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- As the official replacement filter set for iSpring direct connect undersink water filtration system US21B, this economical filter pack consists of one 10”x4.5” CTO carbon block filter(FC15B) and one 10”x4.5” GAC+KDF water fi
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- Lead Removal: The media of the FC15B-PB filter can effectively remove up to 99% of lead from your water, ensuring safer drinking water for your household.
- Superior GAC KDF Filtration: The 1st-stage FG15B-KS effectively reduces PFAS, PFOA/
iSpring F2US21B Direct Connect 4.5"x10" Undersink Water Filtration CTO Carbon Block and GAC+KDF Water Filter Replacement Cartridge Pack Set (F2US21B)
As the official replacement filter set for iSpring direct connect undersink water filtration system US21B, this economical filter pack consists of one 10”x4.5” CTO carbon block filter(FC15B) and one 10”x4.5” GAC+KDF water filter(FG15B-KS).
1st stage FG15B-KS 10” x 4.5” compound filter is designed to remove chlorine, lead, iron, mercury, hydrogen sulfide, THMs, chloride, chloramines, herbicides, nitrate, odors, and other contaminants.
Using high quality coconut shell carbon and highly compact fabrication tech, 2nd stage CTO filter FC15B 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.
Individually sealed for freshness. Depending on source water quality, replace the filters every 8-12 months to achieve optimal performance. Please refer to our manual and our helpful YouTube videos for filter change tips if needed.
The under counter water system this filter pack works for is NOT designed to reduce Total Dissolved Solids(TDS) removal and instead keeps essential minerals in your water. If you are interested in a filter that removes TDS, please consider our iSpring Reverse Osmosis (RO) systems such as RO500, RCC7, RO100 and more.
Your risk-free shopping experience is backed by a 30-day money-back guarantee, extended manufacturer warranty, and lifetime tech support from iSpring in Atlanta, GA.
iSpring F2US21B-CPB Direct Connect US21B-CPB Replacement Filter Set, 4.5"x10" Undersink Water Filtration, Lead-Removal, GAC KDF Cartridges (F2US21B-CPB)
Lead Removal: The media of the FC15B-PB filter can effectively remove up to 99% of lead from your water, ensuring safer drinking water for your household.
Superior GAC KDF Filtration: The 1st-stage FG15B-KS effectively reduces PFAS, PFOA/PFOS, chlorine, mercury, cloudiness, colors, bad taste, and many other heavy metals.
Standard Size: Our filters fit standard 10" x 4.5" housings, including brand-name models.
Built to Last: Your filter changing schedule will depend on the contamination level of your source water. We recommend changing your filters every 12 months or after filtering up to 80,000 gallons of water.
Guaranteed Freshness: Each cartridge is individually wrapped to maintain optimal freshness. Please unwrap before use.
Peace of Mind Support: Register online to activate your warranty and enjoy lifetime free tech support from our U.S.-based team. We stand by our products—if you encounter any issues, contact us immediately and we'll gladly assist!
Important Note: This filter does not reduce Total Dissolved Solids (TDS) like an RO membrane. If TDS removal is your goal, we recommend exploring our iSpring Reverse Osmosis (RO) systems.