Top 10 20x20x5 Carbon – Replacement Under-Sink Water Filters

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1. iSpring

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20” x 4.5”, CTO Carbon Block, iSpring FC25B Whole House Water Filter Replacement Cartridge

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iSpring #ad - Standard size: our filter set fits standard 20” x 4. The 20” x 4. Protect your family and household appliance from chlorine and more: say goodbye to smelly, taste and odor compounds, bad tasting water! The FC25B carbon block filter is specially designed to remove up to 99% of chlorine from water as well as various natural organic compounds, and synthetic organic chemicals.

5” housings, including brand name models. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. We are happy to help! Please note: the cartridges are individually wrapped to ensure freshness. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis RO systems. They are tested by an independent third-party to meet NSF/ANSI standards.

Activated carbon is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb. S. Top-notch quality: our fc25b cto carbon block filters are made of high-quality coconut shell activated carbon for maximum filtration efficiency and filter life. Local support team. Unlike an ro membrane, the filters don’t reduce Total Dissolved Solids TDS, and instead keeps healthy minerals in your water. Please unwrap the cartridges before use.
BrandiSpring #ad
ManufactureriSpring #ad
Height20 Inches
Length4.5 Inches
Weight5.2 Pounds
Width4.5 Inches
Part NumberFC25B
ModelFC25B

2. Express Water

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Express Water – 10 Pack Water Filter Activated Carbon Block Replacement Filter – ACB Large Capacity Water Filter – Whole House Filtration – 5 Micron Water Filter – 4.5” x 20” inch

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Express Water #ad - Easy to replace water filter cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running. Coconut carbon provides an added layer of filtration with the freshest taste.

The highest quality, long-lasting materials give you up to 100, 000 gallons of water filtration. Carbon water filter: efficient tight packed carbon granules give you the efficient high capacity filtration you need in your whole home water filtration system. On demand support: support from experts who can answer any of your questions about your Express Water water filter system. Universal standard size water filters: take the guessing out of replacing your water filters.

Express water’s 5 micron activated Carbon Block ACB Filter 10 Pack, 4. 5” x 20” size fits all standard 4. 5” x 20” whole home water filter system housings. Whole house water filter system: eliminate harmful contaminants from your entire home’s water with Express Water’s Water Filtration System and easy to replace Water Filter Replacement Cartridges.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Weight50 Pounds
Part NumberFLTWH2045C10
ModelFLTWH2045C10

3. Geekpure

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Geekpure 20-Inch Universal Compatible Big Blue Carbon Block Water Filter Cartridge- 4.5 Inch x 20 Inch

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Geekpure #ad - Filter is individually wrapped&sealed and extend shelf life. Enjoy better water from every tap and every appliance in the whole house.

Life time:6-12 months or 100k gallons depends on Usage Amount and Feed Water Quality, these can be used for residential and commercial applications. Made of 100% high quality coconut carbon, 5 Micron, Pack of 1. Size at 4. 5" diameter x 20" height, Fits all standard 20" sized whole house water filter housing. Carbon block filter is used to remove chlorine, taste & odors, very fine particulates. It is installed at the main water supply and produce pure water for your entire home.
BrandGeekpure #ad
ManufacturerGeekpure #ad
Height20 Inches
Length4.5 Inches
Weight3.1 Kilograms
Width4.5 Inches
Part NumberBC20-BB-5
Warranty1 Year

4. Tier1

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Tier1 Replacement for EP-20BB 5 Micron 20 x 4.5 Carbon Block Water Filter 2-Pack

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Tier1 #ad - Quick & easy installation: quick and easy installation into your 20 x 4. 5 inch big Blue whole house filtration system. 6 month filter life: by replacing your water filter every 6 months, depending on the quality of your water, you keep your water tasting great with the Tier1 Big Blue Carbon filter.

Replace your old ep-20bb or ep-20BB with a Tier1 Big Blue Water Filter. Enhanced water quality: Improves the quality of your water through contaminant reduction. Replacement part for many part numbers & models: this filter is comparable to many 5 Micron 20 x 4. 5 carbon block filter. High quality filtration: This filter reduces chlorine taste & odor, sediment, dirt, and particles.
BrandTier1 #ad
Height20.23 Inches
Length4.49 Inches
Weight9.9 Pounds
Width8.98 Inches
Part NumberTIER1-EP5-20BB

5. Pentek

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20" x 2-1/2", 5 Micron,Silver, Pentek, 155597-43 C1-20 Carbon-Impregnated Cellulose Filter Cartridge

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Pentek #ad - Carbon-impregnated cellulose media with a polyester backing and external polyethylene netting for strength. Reduces fine sediment and chlorine taste and odor in residential drinking water. Nominal filtration rating of 5 microns. Initial pressure drop of 1 psi at a flow rate of 5 gpm. Temperature range of 40 to 125 degrees F 4. 4 to 51. 7 degrees C.
BrandPentek #ad
ManufacturerPentair Industries #ad
Height20 Inches
Length2.5 Inches
Weight0.73 Pounds
Width2.5 Inches
Part Number155597-43
ModelC1-20

6. Express Water

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Express Water – Granular Activated Carbon Replacement Filter – Whole House Replacement Water Filter – GAC High Capacity Water Filter – 5 Micron Water Filter – 4.5” x 20” inch

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Express Water #ad - Express water’s whole house replacement filters fit all standard 4. 5” x 20” whole home water filter system housings. Long lasting water filtration: granular activated carbon replacement water filters have a life cycle of 100, 000 gallons or 6–12 months depending on incoming water quality, providing your home with reliable whole home water filtration.

Whole house water filter system: reduce harmful impurities from your entire home’s water with Express Water’s 3 Stage whole house water filtration system and easy to replace water filter replacement cartridges. High quality whole home water filter: Express Water’s GAC replacement filter means no more worrying about your home’s water. Universal standard size Water Filters: Take the guessing out of replacing your water filters. Reliable water filtration: help your business prevent costly build up of rust and other damaging sediments, reduce the energy cost, give healthier water to your pets, extend the life of your home appliances, and more with Express Water’s whole home filtration systems.

Choose from a variety of filter options, all designed to meet the highest filtration standards. Express water replacement filters: express water has all your whole house filtration needs covered. Coconut shell carbon provides an added layer of water filtration with the freshest taste. Granular activated carbon water filter: efficiently arranged carbon granules maximizes filtration surface area in your whole home water filtration system.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Part NumberFLTWH2045G
ModelFLTWH2045G

7. Hydronix

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5 micron, White, Hydronix HX-CB-25-2005/3 Universal NSF Coconut Activated Carbon Block Water Filter, 20 inches, 2.5" x 20"

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Hydronix #ad - 3 pack carbon block water filters. Coconut shell Carbon for better taste and performance. 2. 5 inch x 20 inch. Nsf/ansi standard 42 certified.
BrandHydronix #ad
ManufacturerHydronix #ad
Height20 Inches
Length2.5 Inches
Weight2 Pounds
Width2.5 Inches
Part NumberHX-CB-25-2005/3
ModelHX-CB-25-2005/3

8. Express Water

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Coconut Shell Carbon High Capacity Cartridge Filters – 5 Micron Water Filter – 4.5” x 20” inch, Express Water 2-Year Whole House Water Filter Set – 3 Stage Water Filtration Replacement Kit – Sediment

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Express Water #ad - Unlike reverse osmosis systems, whole house systems will NOT reduce Total Dissolved Solids TDS. Please be informed - whole house systems are installed at the main water supply line for the purpose of treating all incoming water in your home or business. Sediment filter: keep the most damaging sediments out of your water with Express Water’s 4-layer smart water filter design.

Easy to replace water filter cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running. If you are searching for a filter that removes TDS, we recommend our Express Water Reverse Osmosis systems. Save time and money: high-capacity filters will efficiently and effectively filter your water without loss of pressure. Catch and reduce the largest impurities in the filter’s outer layers while inner layers catch the finer contaminants giving you the longest lasting and effective water filtration system for your home. Take care of your home: protect our plants, laundry machine, give healthier water to your pets and extend the life of your dishwasher, and other appliances through proper and efficient 3-stage water filtration.

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. Gac carbon water filter: efficient tight packed carbon granules give you the efficient high capacity filtration you need in your whole home water filtration system. Standard water filter: our home water filter reduces over 52 different impurities from your water including chlorine, rust, and more.
BrandExpress Water #ad
Height4.5 Inches
Length20 Inches
Width4.5 Inches
ModelFLTWH2045CGS2

9. SpiroPure

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SpiroPure Replacement for Pentek EP-20 155529 CEP-20E 155788-43 CB-25-2005 20x2.5 5 Micron NSF Carbon Water Filter Cartridge 6 Pack

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SpiroPure #ad - 5 micron rating: with a nominal filtration rating of 5 micron, our quality NSF Carbon filter reduces fine sediment particles and chlorine taste & odor from tap water.

20x2. 5 nominal: 20” slim filter made with CTO coconut shell carbon filter media. If you do not like the performance of your filter, you can send it back within 30 days of purchase for a full refund. 30-day guarantee: spiropure filters have a 30-day money back guarantee. Nsf certified: this filter cartridge is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements only. Quality replacement: 20” x 2. 5” pac powdered activated carbon water filters, compatible with Pentek EP-20 / 155529 CEP-20E / 155788-43 and CB-25-2005.
BrandSpiroPure #ad
ManufacturerSpiroPure #ad
Height20 Inches
Length20 Inches
Weight10 Pounds
Width2.72 Inches
Part NumberSP-EP-20 (Case of 6)
ModelSP-EP-20 (Case of 6)

10. Max Water

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16 Pack 20" x 2.5" Carbon Block Water Filter Whole House Reverse Osmosis CTO Carbon 5 Micron compatible with 20" Slim Blue Whole House Water Filtration Systems

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Max Water #ad - 100% sustainable Coconut Shell Carbon. Fits most standard 20" size housings and most reverse osmosis systems. The carbon block filter removes any remaining chlorine, odors, tastes, and fine sediments left over before the water moves on to the RO Membrane. Size 20" x 2. 5" compatible with 20" Slim Blue Whole House Systems. 5 micron nominal filter remove small particles and carbon fines & to ensure 100% of chlorine removal from water.
BrandMax Water #ad
ManufacturerMax Water #ad
Weight24 Pounds