Top 9 KDF GAC Filter – Replacement Under-Sink Water Filters

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1. iSpring

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ISpring FG25B-KS High Capacity Heavy Metal Reducing GAC and KDF Whole House Water Filter Replacement Cartridge, 4.5” x 20”

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iSpring #ad - Standard size our filter set fits any standard whole house water filter housings that require 20” x 4. 5” cartridges. Protect your family and household appliance from chlorine, lead, and other harmful Chemicals FG25B-KS 20” x 4. 5” compound filter is designed to remove chlorine, mercury, pesticides, heavy metals, hydrogen sulfide, herbicides, Heavy Metal, odors, and other contaminants.

Our goal is, to maximize your user experience. Please unwrap the cartridges before installation. Each cartridge is individually wrapped to ensure that the filter stays fresh. Built to last your filter changing schedule will be based on the contamination level of your source water. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis RO systems. Our knowledgeable team is available to help you find a filtration solution that best solves your specific water concerns or to help with any after-sale support you may need.

We recommend changing your filters every 10-12 months or when you’ve filtered up to 150K gallons of water. Our filter cartridges are hassle-free and replacement is a breeze! Peace-of-mind customer service we offer both technical assistance and customer service support by phone or email out of our headquarters in Atlanta, and always will be, GA. Instead this filter keeps healthy minerals in your water while removing harmful chemicals. Please note unlike an ro membrane, this filter does not reduce total dissolved Solids TDS.
BrandiSpring #ad
ManufactureriSpring Water Systems #ad
Height4.5 Inches
Length20 Inches
Weight5 Pounds
Width4.5 Inches
Part NumberFG25B-KS
ModelFG25B-KS

2. APEX LEGENDS

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Reduces Heavy Metals, for MR-1030, APEX RF-1030 Countertop Water Filter Replacement Cartridge, Bad Taste and Chlorine, 3 Stage GAC Calcite KDF-55 Water Filter for Sink, Easy Install Water Filter

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APEX LEGENDS #ad - Great customer service - our water purifier under counter include a 30 day guarantee and 1 year manufacturer's warranty on defects in materials and workmanship. Better tasting water - the three stages of this countertop water dispenser effectively reduce the most common impurities found in tap water, chlorine, and other harmful chemicals.

Los mejores filtros de agua para tomar. This may vary based on the quality of the feed water. Very easy to install - no need for a plumber to replace this water filtration system cartridge. Exprt's materials and components comply with NSF/ANSI Standard. Buying bottled water for daily home consumption gets expensive. If tds or ppm removal is desired, a ro water filter system is required. It also reduces heavy metals such as lead, chloramine, pesticides, hydrogen sulfide, iron, such as sediments, and mercury to ensure the water tastes great and is clean & healthy.

Filtro de agua para tomar no baja TDS o PPM. Much better water quality - apex's sink filter uses KDF-55 heavy metal reduction media and a coconut shell carbon filter. One water faucet filter cartridge can last up to 4-6 months. Worth the money - no longer need to carry heavy cases of water bottles, water filters eliminate that need.
BrandAPEX LEGENDS #ad
ManufacturerApex Water Filters #ad
Height10 Inches
Length2.5 Inches
Width2.5 Inches
Part NumberRF-1030
ModelRF-1030

3. Aquaboon

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GAC-10, WFPFC9001, AP117, FXUTC, GAC1 2-Pack, Aquaboon 5 Micron 10x2.5" Granular Activated Carbon Water Filter Replacement | Universal 10 inch Coconut Shell GAC Cartridge | Compatible with C-10, D-20A

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Aquaboon #ad - Aquaboon – your smartest coconut shell water filter solution! Lifetime - 6 month Replace once or twice times a year, depending on the water quality. Make your home contamination-free by removing chlorine and other harmful industrial chemicals - Now you can drink water knowing it is 100% safe. Long lasting your carbon block activated water filter comes in an airtight packaging, so you can trust it won’t go to waste, works better and lasts longer.

Enjoy long-lasting coconut shell granular activated carbon water filters. Ultra-high grade filtration our pure water coconut carbon filter is extensively tested and verified to meet health and product standards. Universal 10-inch replacement elegantly designed at 2. 5” x 10”, it will fit all standard 10 inch Reverse Osmosis and Under Sink Systems. Have a piece of mind knowing your water is purified with the superior Aquaboon filtration system. Fits most standard 10 inch undersink reverse osmosis or Water Filtration systems like Ametek CTR-210, Flotec TO2, US-1500 Compatible filters and housings dupont gac1d, rvf-10, culligan ro-3000, sy-2000, ro-3500, dupont gac1-d, truevalue 826-746, dupont gac1-s, us-600, sy-2650, pentek us-1000, etc.

Compatible filters ametek c-10, sears 34375, dupont wfpfc9001, omni gac1, culligan d-20a, hydrocure pc 36599, dupont gac-1, cuno cfs117, aquapure ap117, everpure CGT-10, 3m cfs117 / ap117, ace hardware 49640, dupont gac1-ss, tier2 gac-10, ge fxutc, Pentek GAC-10, Whirlpool WHKF-GAC, dupont gac1s, american plumber wcc, Dupont GAC1SS. Your easy and smart coconut shell carbon filter.
BrandAquaboon #ad
ManufacturerAquaboon #ad
Height2.48 Inches
Length10 Inches
Weight2 Pounds
Width5 Inches
Part NumberB01LYQFW7C

4. iSpring

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Fits WGB32B-KS, GAC+KDF, and CTO Carbon Block Cartridges, iSpring F3WGB32BKS 4.5” x 20” 3-Stage Whole House Water Filter Set Replacement Pack with Sediment

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iSpring #ad - Each cartridge is individually wrapped to ensure that the filter stays fresh. Both filters have a capacity of 100, 000 gallons of water; enough to supply a family of four with clean water for a full year. Our knowledgeable team is available to help you find a filtration solution that best solves your specific water concerns or to help with any after-sale support you may need.

Protect your family and household appliance from chlorine, mercury, herbicides, Heavy Metal, lead, hydrogen sulfide, pesticides, and Other Harmful Chemicals Our filter FG25B-KS is specially designed to remove chlorine, odors, heavy metals, and other contaminants. Easy filter replacement refer to our manual and our helpful youtube videos for easy filter replacement. Instead this filter keeps healthy minerals in your water while removing harmful chemicals. Please note unlike an ro membrane, these filters do not reduce total dissolved Solids TDS.

If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis RO systems. The third stage cto Carbon Block filter is made of quality coconut shell carbon. Each filter is tested by an independent third-party to meet NSF/ANSI standards. Our goal is, and always will be, to maximize your user experience. Water flow: up to 15 GPM. Built to last the first stage polypropylene sediment filter is able to filter particles as small as 5 microns.
BrandiSpring #ad
ManufactureriSpring Water Systems #ad
Height4.5 Inches
Length20 Inches
Weight14 Pounds
Width4.5 Inches
Part NumberF3WGB32BKS
ModelF3WGB32BKS

5. Premier Water Systems

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Chlorine | 2.5" x 10" Standard Size Cartridge, Premier KDF 55 + Coconut Shell Carbon Filter Cartridge | Reduces Heavy Metals

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Premier Water Systems #ad - Effectively removes chlorine and heavy metals. Fits standard 10" housing for Reverse Osmosis Water Filtration Applications. Clear filter Cartridge: 2.

5" x 10". High chemical absorption capacity. This is normal and it will not affect the working of the filter. Filter effectively removes hundreds of contaminants from water. It will still function as described. Significantly extend the life of the GAC. Designed to be used in most standard sized housings. Kdf process media to safely reduce or remove chlorine, iron, heavy metals. Easy installation. Sometimes during shipping, the media may shift. Compatible with apex rf-1030 and RF-1010 Great for municipal or well water. Perfect solution for household of any size.
BrandPremier Water Systems #ad
ManufacturerOceanic Water Systems #ad
Height10 inches
Length2.5 inches
Weight1 Pounds
Width2.5 inches
Part NumberKDF/GAC10-55
ModelKDF/GAC10-55

6. Aquaboon

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Aquaboon 5 Micron Granular Activated Carbon Water Filter Replacement | Universal 10 x 2.5 inch Coconut Shell GAC Cartridge | Compatible with C-10, GAC1, WFPFC9001, FXUTC, AP117, GAC-10, 4 Pack, D-20A

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Aquaboon #ad - Fits most standard 10 inch undersink reverse osmosis or water filtration systems like Ametek CTR-210, SY-2650, Dupont GAC1-D, RVF-10, US-1500. Compatible filters and housings dupont gac1d, flotec to2, truevalue 826-746, ro-3500, sy-2000, pentek us-1000, us-600, dupont gac1-s, culligan ro-3000, etc. Have a piece of mind knowing your water is purified with the superior Aquaboon filtration system.

Enjoy long-lasting coconut shell granular activated carbon water filters. Universal 10-inch replacement elegantly designed at 2. 5” x 10”, it will fit all standard 10 inch Reverse Osmosis and Under Sink Systems. Your easy and smart coconut shell carbon filter. Compatible filters ametek c-10, cuno cfs117, 3m cfs117 / ap117, ge fxutc, hydrocure pc 36599, ace hardware 49640, dupont gac1s, dupont gac1-ss, aquapure ap117, american plumber wcc, dupont gac-1, Dupont WFPFC9001, culligan d-20a, Whirlpool WHKF-GAC, Omni GAC1, pentek gac-10, everpure cgt-10, tier2 gac-10, sears 34375, Dupont GAC1SS.

Long lasting your carbon block activated water filter comes in an airtight packaging, so you can trust it won’t go to waste, works better and lasts longer. Aquaboon – your smartest coconut shell water filter solution! Lifetime - 6 month Replace once or twice times a year, depending on the water quality. Ultra-high grade filtration our pure water coconut carbon filter is extensively tested and verified to meet health and product standards. Make your home contamination-free by removing chlorine and other harmful industrial chemicals - Now you can drink water knowing it is 100% safe.
BrandAquaboon #ad
ManufacturerAquaBoon #ad
Height2.6 Inches
Length11.5 Inches
Weight4 Pounds
Width10 Inches
Part Numberunknown

7. iFilters

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IFilters KDF and GAC Well or City Water Whole House Filtration 4.5" x 10"

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iFilters #ad - Removal of organic compounds including VOCs, chlorine, radon, bad taste and odor. Made from Certified approved materials. Excellent for Well Water and City Water Filtration. Gac and 1 lb of KDF. Size 4. 5" x 10".
BrandiFilters #ad
ManufactureriFilters #ad
Height10 Inches
Length4.5 Inches
Weight3 Pounds
Width4.5 Inches
Part NumberFBA-KDF1-4510
ModelKFC0207

8. Lake Industries

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NSF 42 Certified 1, Lake Industries Universal KDF 55/Activated Carbon Water Filter Cartridge, Replacement 10 inch CTO Water Purifier Filter, 10 Micron

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Lake Industries #ad - Universal 10-inch cartridge - Fits most under-sink and countertop water filtration systems. Long lasting 10, 000 gallon filter - conveniently delivers up to 10000 gallons of healthy clean water with a filtration accuracy of 001~01um.

Safe & certified - every replacement water filter cartridge is NSF 42 Certified. Satisfaction guarantee - every unit is backed by a complete 30-day money back guarantee. If you don’t love how easy it is to use and the water it produces, return it for a full, no questions asked refund. Unsurpassed performance - effectively removes 99. 9% of chlorine, bad taste and odors, heavy metals, iron, and other contaminants.
BrandLake Industries #ad
Height2.7 Inches
Length9.9 Inches
Width2.8 Inches
Part NumberOMB934-1M w/KDF
Model8541998162

9. EXPRESS WATER

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KDF High Capacity Cartridge Filters – 5 Micron Water Filter 4.5” x 20” inch, Carbon Block, Express Water Whole House Heavy Metal Water Filter Set – 3 Stage Water Filtration Replacement Kit – Sediment

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EXPRESS WATER #ad - Heavy metal water filter: protect your home from dangerous impurities with the advanced KDF heavy metal filter which combines catalytic carbon and high purity ionically charged copper and zinc granules to reduce Heavy Metals, Iron, Lead, Nickel, Chromium and more. Long lasting water filtration: the highest quality, long-lasting materials give you up to 100, 000 gallons of water filtration depending on incoming water quality.

Whole house water filter system: reduce harmful impurities from your entire home’s water with Express Water’s 3 Stage Water Filtration System and easy to replace Water Filter Replacement Cartridges. Carbon water filter: efficient tight packed carbon granules give you the efficient high capacity filtration you need in your whole home water filtration system. Vacuum heated organic coconut shell carbon provides an added layer of filtration with the freshest taste. If you are searching for a filter that reduces TDS, see our Express Water Reverse Osmosis systems.

Catch and filter the largest impurities in the filter’s outer layers while inner layers catch the finer impurities giving you the longest lasting and effective water filtration system for your home. Sediment filter: keep the most damaging sediments out of your water with Express Water’s 4-layer smart water filter design. On demand support: support from experts who can answer any of your questions about your replacement water filters. Trust express water: choose the best filters for home filtration and make your house a clean water house today! Unlike reverse osmosis systems, whole house systems will NOT reduce Total Dissolved Solids TDS.
BrandEXPRESS WATER #ad
ManufacturerExpress Water #ad
Height20 Inches
Length4.5 Inches
Weight17.5 Pounds
Width4.5 Inches
Part NumberFLTWH2045CKS1
ModelFLTWH2045CKS1