iSpring FG15B-KS GAC and KDF Carbon Filter Replacement Cartridge for Direct Connect Undersink Water Filtration System US21B, 10” x 4.5”
$57.99
About this item
- 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.
- Teaming up with carbon filters like iSpring FC15B, this filter removes the unpleasant taste or odor left in chlorinated water. They also tackle problems like turbidity, cloudiness, colors, bad taste, and odors like hydrogen sulfide that smells like rotten eggs.
- Official 1st stage replacement filter cartridge for iSpring direct connect Point-of-Use(POU) undersink water filtration system US21B. Fits standard 10" undercounter or whole house water filtration systems. Individually sealed for freshness.
- Based on the contaminant levels in source water and your water use, we suggest that you change your filters every 8-12 months for ideal filtration performance. Hassle-free filter cartridge replacement is a breeze!
- Please be noted that the system for which this filter works is NOT designed to reduce Total Dissolved Solids(TDS) removal and instead keeps minerals in your water. If you are interested in a filter that significantly reduces TDS, please consider our iSpring Reverse Osmosis (RO) systems RCC7 series or tankless RO500.
- We offer tech and CS support via phone and email from Atlanta, GA. Contact our responsive and professional team for product selection to suit your water filtration needs and after-sale support to maximize your user experience. Now, and years to come, we will be right here and ready to help.
Frequently Bought Together

iSpring FG15B-KS GAC and KDF Carbon Filter Replacement Cartridge for Direct Connect Undersink Water Filtration System US21B, 10” x 4.5”
$57.99- Availability: In Stock
- Model: FG15B-KS
- Manufacturer: iSpring
sheila murphy | 
2020-01-28
Our tap water is heavily chlorinated this time of year and, as expected, there is no trace of chlorine or chloramine when tested.

2020-01-28
Our tap water is heavily chlorinated this time of year and, as expected, there is no trace of chlorine or chloramine when tested.
0 0 | 
2019-02-12
The water is tasteless coming from the faucet, a huge improvement over the city poolwater.

2019-02-12
The water is tasteless coming from the faucet, a huge improvement over the city poolwater.
Jeannine Gauthier | 
2018-03-02
Would highly recommend this product and would buy it again when it's time to change(in my case 10 months).

2018-03-02
Would highly recommend this product and would buy it again when it's time to change(in my case 10 months).
Write Review
-
iSpring FC15B 5-Micron Coconut Shell Activated CTO Carbon Block Water Filter Replacement Cartridge for Under Sink and Whole House Water Systems
$43.99 -
iSpring WGB32B 3-Stage Whole House Water Filtration System w/ 20-Inch Sediment and Carbon Block Filters
$516.99 -
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
$115.99 -
iSpring WSP50ARB Reusable Spin-down Sediment Water Filter with Scraper and Touch-Screen Auto Flushing, 50 Micron, 35 GPM, 1-MNPT, 3/4-inch FNPT
$229.99 -
iSpring RO500-BN Tankless RO Reverse Osmosis Water Filtration System, 500 GPD Fast Flow, Brushed Nickel Faucet, 2:1 Pure to Drain Ratio, White
$599.99 -
iSpring WGB21B-PB 2-Stage Lead Reducing Whole House Water Filtration System w/ 10” x 4.5” Carbon Block Filter FC15B and Lead Reducing Filter FCRC15B
$272.99 -
iSpring F2US21B Direct Connect 4.5"x10" Undersink Water Filtration CTO Carbon Block and GAC+KDF Water Filter Replacement Cartridge Pack Set
$72.99 -
PureDrop RTW5AK Reverse Osmosis Alkaline Water Filtration System, pH+ Alkaline Remineralization RO Water Filter System Under Sink, 6 Stage Under Sink RO Water Filter with Faucet, TDS Reduction
$189.99
-
Start Download
FG15B-KS Manual