New Arrivals/Restock

iSpring WGB21B 2-Stage Whole House Water Filtration System with 10" x 4.5" Sediment CTO Filter & FC15B High Capacity Activated CTO Carbon Block Filter Replacement Cartridge, 4.5"x4.5"x10"

flash sale iconLimited Time Sale
Until the end
15
20
24

US$114.41 cheaper than the new price!!

Free shipping for purchases over $99 ( Details )
Free cash-on-delivery fees for purchases over $99
Please note that the sales price and tax displayed may differ between online and in-store. Also, the product may be out of stock in-store.
Used  US$76.27
quantity

Product details

Management number 221588367 Release Date 2026/05/03 List Price US$76.27 Model Number 221588367
Category

The WGB21B is a great "point of entry" filtration system and excellent alternative to the larger WGB22B (4. 5"X20") for smaller homes or where limited space may be a concern. Unlike "point of use" systems the WGB21B will filter water directly from your source. This means that water from every outlet in your home will have passed through this filter, providing up to 50, 000 gallons of clean water for the entire family. The first stage of this system houses a 5-micron high-capacity polypropylene sediment filter (FP15B). This filter is responsible for removing dirt, rust, and most suspended solids, to protect and extend the life of the CTO carbon block filter. The second stage houses the 5-micron CTO coconut shell carbon block filter (FC15B). Block carbon is more effective than other forms of carbon in that it is finely ground up carbon packed into a solidified block. This means they have a higher density than other types of carbon filters, and are therefore more effective in removing their targeted contaminants. The carbon block filter knocks out bad tastes and odors, removes over 90% of sediment and chlorine from the water, and is highly effective on organic chemicals (VOCs) like pesticides, herbicides, and industrial chemicals. If you are on city water, your local water utility must meet very strict Federal and State standards for purity. Almost all municipally treated water is chlorinated, and this can affect taste and create odors in the water. The WGB21B filtration system will remove these tastes and odors. If you are on a private well or spring, you should have your water tested. You may also want to contact our technical staff in Atltant, GA for help in selecting the best filter system for your water chemistry. iSpring FC15B High Capacity Activated CTO Carbon Block Filter Replacement Cartridge for Under Sink and Whole House Water Filtration System, 4.5"x4.5"x10", 5-Micron 10"x4.5" Used as the second stage for iSpring Direct Connect under sink water filter system US21B and the iSpring 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, it 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.

  • Product 1: [Two-Stage Effective Filtration] 1st-Stage premium 5-micron polypropylene sediment filter (FP15B) captures dirt, sand, silt, dust, rust, and scale particles and extends the life of CTO carbon block filter. 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 over 90% of chlorine, and is highly effective on VOCs like pesticides, herbicides, and industrial solvents.
  • Product 1: [Superb Filtration Capacity] 10"x4. 5" replaceable whole house water filters can provide up to a full year of clean water(up to 50, 000 gallons) for a family of four. 1-inch inlet and outlet ports allow fast water flow with less pressure loss. Fine PP sediment filter and premium quality CTO filter not only bring clean and fresh water to every faucet in your house, but also help prolong the lives of your water-using appliances and protect plumbing from sediment and scale buildup.
  • Product 1: [Easy Installation and Filter Change] The system comes pre-assembled onto the mounting bracket for a streamlined, DIY installation. Filter wrench included to make routine filter changes easy and quick. A pressure release valve allows for the release of built-up pressure when changing filters. Refer to our manual and/or YouTube videos to Install this point-of-entry (POE) filtration system at the main water supply to get clean and healthy water for the entire family.
  • Product 1: [Top-Notch Customer Service] Backed by a 30-day money-back guarantee. 1-Year manufacturer warranty and extended upon registration at iSpring. Lifetime customer and tech support from Atlanta, GA.
  • Product 2: [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" Under Sink Water Filter and Whole House Water Filtration Systems. Free of surfactants, binders, and adhesives. No leaching carbon ash.
  • Product 2: [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.
  • Product 2: [Long Filter Life] 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. Usually used as the second stage filter for whole house water filtration systems, FC15B brings clean and refreshing water to every faucet in your home.
  • Product 2: [Great Compatibility] Official replacement filter for iSpring Under Sink Water Filter System US21B and Whole House water filtration systems(WGB21B, WGB21BM, and WGB21B-PB). Fits other standard 10" x 4.5 undersink and whole house water filtration systems. Individually sealed for freshness.
Capacity 50000 Gallons
Brand Name iSpring
Model Name WGB21B
Unit Count 1.0 Count
Model Number WGB21B
Power Source Gravity-fed
Material Type Polypropylene
Container Type Faucet
Installation Type Under Sink
Included Components Instruction Manual
Purification Method Activated Carbon, Carbon Block
Other Special Features of the Product Chlorine Reduction

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Product Review

You must be logged in to post a review