# ISPRING Direct Connect US21B-CPB Replacement Filter Set 4.5in.x10in. Undersink Water Filtration, Lead-Removal GAC+KDF Cartridges

**Brand:** [ISPRING](https://shop.coreranger.com/brands/ISPRING)
**SKU:** F2US21B-CPB
**Price:** $139.99 · in stock
**URL:** https://shop.coreranger.com/product/ispring-direct-connect-us21b-cpb-replacement-filter-set-4-5in-x10in-undersink-water-filtration-lead-334237440

## Specifications

| Spec | Value |
|---|---|
| Model # | F2US21B-CPB |
| Reduces | Arsenic,Chloramine,Chlorine,Chlorine Taste,Lead,Mercury,Odor,Other,PFAs,PFOA/PFOS |
| Features | No additional features |
| Pack Size | 1 |
| Internet # | 334237440 |
| Returnable | 90-Day |
| Store SKU # | 1013575962 |
| Filtration Method | Activated Carbon,CTO,Carbon Block,Chemical Absorption,Coconut Carbon,GAC,KDF |
| Product Depth (in.) | 4.5 in |
| Product Width (in.) | 4.5 in |
| Product Height (in.) | 10 in |
| Product Weight (lb.) | 5.5 lb |
| Manufacturer Warranty | 30 days |
| Brand/Model Compatibility | iSpring US21B Series |
| Number of filters included | 2 |

## Description

The FC15B-PB and FG15B-KS filters offer premium water filtration with features designed to ensure safer, cleaner water for your household. The FC15B-PB removes up to 99% of lead, while the FG15B-KS employs advanced GAC plus KDF filtration to reduce PFAS, PFOA/PFOS, chlorine, mercury, and other impurities, improving taste and clarity. Compatible with standard 10 in. x 4.5 in. housings, these durable filters last up to 12 months or 80,000 gal. depending on water quality. Individually wrapped for guaranteed freshness, they are backed by a warranty and lifetime U.S.-based tech support. Note: For TDS reduction, consider iSpring Reverse Osmosis systems.

• Compatible with standard 10' x 4.5' housings
• Reduces PFAS, chlorine, mercury, improving taste
• The FC15B-PB removes up to 99% of lead