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iSpring F2WGB21BKSNC Whole House Water Filter Replacement Pack, SGS-Tested to Remove up to 94.4% of Chloramine, Reduces Heavy Metals, Lead, Chlorine, Sediment, 10¡± x 4.5¡± Filters, Fits WGB21B-KSNC

$139.00
$139.00 $139.00
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iSpring F2WGB21BKSNC
$139.00
iSpring F2WGB21BKSNC Whole House Water Filter Replacement Pack, SGS-Tested to Remove up to 94.4% of Chloramine, Reduces Heavy Metals, Lead, Chlorine, Sediment, 10¡± x 4.5¡± Filters, Fits WGB21B-KSNCiSpring F2WGB21BKSNC

Features

Product Description
The iSpring F2WGB21BKSNC 2-stage replacement filter pack is designed for the WGB21B-KSNC whole house water filter system. In this setup, Stage 1 (FG15B-KS) uses GAC + KDF media to reduce chlorine, lead, mercury, hydrogen sulfide, and heavy metals. Stage 2 (FC15B-NC) uses catalytic carbon, SGS-tested to NSF/ANSI 42 standards, to reduce chloramine, chlorine, VOCs, and odors—making it effective as a chloramine removal water filter. This replacement set fits standard 10” × 4.5” housings and treats up to 50,000 gallons or lasts up to 12 months. Individually sealed cartridges ensure consistent performance. The system retains beneficial minerals and does not reduce TDS. For TDS reduction, pair with an iSpring reverse osmosis system.
  • AvailabilityIn Stock
  • Model F2WGB21BKSNC
  • Manufacturer iSpring
  • Product Dimensions 4.5"L x 4.5"W x 10.0"H
  • Product Weight 5.8 LB

Manuals

Whole House Filters Manual.pdf Download

iSpring vs Other Brands

Feature
NSF/ANSI 58 Certification
Yes (full system certified)
Often partial or none
Verified performance & safety
Filtration Stages
Clear 3/4/5/7 stage options
Usually 4-5 stages
More complete options
Alkaline Remineralization
Available (RCC7AK/RCC7AK-UV)
Rare or expensive add-on
Better taste & pH balance
See-through 1st Stage Housing
Yes, smart flow sensor
Unavailable in most systems
Easy visual inspection
Daily Production
75 GPD (reliable output)
Often lower or overstated
Reliable daily production
Replacement Filters
Widely available & affordable
Hard or harder to find
Lower long-term cost
Installation
DIY friendly, no plumber needed
Can be more complex
Faster & easier set-up
Support & Warranty
Responsive support + solid warranty
Varies widely
Better post-purchase experience
Value for Money
High performance at competitive price
Higher price for similar specs
Better cost-effectiveness

Reviews