Top 10 Big Blue Water Filters 20 x 4.5 Carbon – Replacement Under-Sink Water Filters

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1. Pentek

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Whole House Heavy Duty Dual-Gradient Density Spun Polypropylene Replacement Filter Cartridge, Pentair Pentek DGD-5005-20 Big Blue Sediment Water Filter, 20" x 4.5", 5 Micron, 20-Inch

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Pentek #ad - Keep your water clean and protect your appliances by removing dirt, sand, silt and particulates. Nsf certified for your peace of mind. Achieves up to 3x  the dirt holding capacity of similar size sediment cartridges. Replace every 6 months or when you notice a drop in water pressure or quality. Fits all 20" big blue or other heavy duty housings and can replace any 20" x 4. 5" sediment filter cartridge.
BrandPentek #ad
ManufacturerPentair Industries #ad
Height20 Inches
Length4.5 Inches
Weight1.8 Pounds
Width4.5 Inches
Part Number155358-43
ModelDGD-5005-20

2. Pentek

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Whole House Non-Cellulose Carbon Impregnated Pleated Filter Cartridge, 10 Micron, 20" x 4.5", 20-Inch, Pentair Pentek NCP-20BB Big Blue Carbon Water Filter

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Pentek #ad - Suitable for municipal and non chlorinated water applications unlike cellulose cartridges. Provides superior sediment filtration and chlorine taste and odor reduction. High dirt loading capacity with minimal pressure drop due to the pleated design. Fits all 20" big blue housing and can replace any 20" x 4. 5" carbon filter. Combination of pleated polyester media and carbon filtration produces extended service life.
BrandPentek #ad
ManufacturerPentair Industries #ad
Height20 Inches
Length4.5 Inches
Weight1 Pounds
Width4.5 Inches
Part Number155382-43
ModelNCP-20BB

3. Aquaboon

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155783-43, Aquaboon Coconut Shell Water Filter Cartridge | Activated Carbon Block CTO | Universal Whole House 5 Micron 20 inch Cartridge | Compatible with EPM-20, FC25B 2-PACK, CB-20

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Aquaboon #ad - Compatible replacement filters clearchoice 84642, cbc-20, watts wcbcff20, ispring fc25b, 84641, cb-45-2010, trojan cb-20, epm-20, pelican cb-20, Pentek 155783-43, hydronix cb-45-2005, etc. Aquaboon – your smartest coconut shell water filter solution! Lifetime - 6 month Replace once or twice times a year, depending on the water quality.

Completely clean water make your home contamination-free by removing chlorine and other harmful industrial chemicals - Now you can drink water knowing it is 100% safe. Universal 20-inch replacement elegantly designed at 4. 5” x 20”, omni, clearchoice, ge, pentek, dupont, trojan, kenmore, watts, Filtrete, pelican, hydronix, it will fit all standard 20 inch Whole House filtration systems of 3M, culligan, omnifilter, ispring, Whirlpool, etc.

Ultra-high grade filtration our pure water coconut carbon filter is extensively tested and verified to meet health and product standards. Enjoy long-lasting coconut shell activated carbon water filters. 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. Have a piece of mind knowing your water is purified with the superior Aquaboon filtration system. Your easy and smart coconut shell carbon filter.
BrandAquaboon #ad

4. Pentek

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25 Micron, Pentair Pentek RFC-20BB Big Blue Carbon Water Filter, Whole House Heavy Duty Radial Flow Carbon Replacement Cartridge with Granular Activated Carbon GAC Filter, 20-Inch, 20" x 4.5"

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Pentek #ad - Fits all 20" pentair pentek big blue or other 20" heavy duty filter housings and can replace any 20" x 4. 5" carbon filter cartridge. Replace every 1 year or when you notice a drop in water pressure or water quality. Reduces sediment and chlorine taste & odor to provide great tasting, clearer water. Nsf international tested and certified for your peace of mind. 100, 000 gallon capacity. Unique radical flow design offers low pressure drop, while significantly reducing release of carbon fines commonly associated with GAC cartridges.
BrandPentek #ad
ManufacturerPentair Industries #ad
Height20 Inches
Length4.5 Inches
Weight2.5 Pounds
Width4.5 Inches
Part Number155247-43
ModelRFC20-BB

5. Pentek

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20" x 4.5", 20-Inch, Whole House Heavy Duty Granular Activated Carbon GAC Replacement Cartridge, Pentair Pentek GAC-20BB Big Blue Carbon Water Filter

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Pentek #ad - Post-filter helps reduce carbon fines and other suspended particles from the filtered water. Replace every six months or when you notice a drop in water pressure or water quality. Fits all 20" pentair pentek big blue or other 20" heavy duty housings and can replace any 20" x 4. 5" carbon filter cartridge. 25, 000 gallon capacity. Nsf international tested and certified for your peace of mind. Effective reduction of bad taste & odors to provide good general-purpose drinking water.
BrandPentek #ad
ManufacturerPentair Industries #ad
Height4.57 Inches
Length19.58 Inches
Weight5 Pounds
Width4.57 Inches
Part Number155249-43
ModelGAC-20BB

6. iSpring

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

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iSpring #ad - The 20” x 4. Local support team. We stand behind our products and if you encounter any problems with any of our water filters please reach out to us immediately. If you are interested in a filter that removes TDS, the filters don’t reduce Total Dissolved Solids TDS, consider our iSpring Reverse Osmosis RO systems.

Protect your family and household appliance from chlorine and more: Say goodbye to smelly, bad tasting water! The FC25B carbon block filter is specially designed to remove up to 99% of chlorine from water as well as taste and odor compounds, cloudiness, and chemicals. Standard size: our fc25b whole house water filter fits standard housings that requires 20” x 4. 5” water filter cartridges, including brand name models. S. We are happy to help! Please note: the water filter cartridges are individually wrapped to ensure freshness.

Unlike an ro membrane, and instead keeps healthy minerals in your water. Peace of mind customer service: register online to activate your manufacturer and life-time free tech support from U. Please unwrap the cartridges before use. 5” water filter cartridge has a minimum impact on water flow up to 15 GPM and require minimum maintenance. Activated carbon is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb.
BrandiSpring #ad
ManufactureriSpring #ad
Height20 Inches
Length4.5 Inches
Weight5.2 Pounds
Width4.5 Inches
Part NumberFC25B
ModelFC25B

7. Aquaboon

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Aquaboon Coconut Shell Water Filter Cartridge | Activated Carbon Block CTO | Universal Whole House 5 Micron 20 inch Cartridge | Compatible with EPM-20, FC25B 1-PACK, 155783-43, CB-20

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Aquaboon #ad - Completely clean water make your home contamination-free by removing chlorine and other harmful industrial chemicals - Now you can drink water knowing it is 100% safe. Enjoy long-lasting coconut shell activated carbon water filters. 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.

Compatible replacement filters clearchoice 84642, epm-20, cb-45-2010, 84641, ispring fc25b, hydronix CB-45-2005, trojan cb-20, pentek 155783-43, CBC-20, watts wcbcff20, Pelican CB-20, etc. Your easy and smart coconut shell carbon filter. Have a piece of mind knowing your water is purified with the superior Aquaboon filtration system. Ultra-high grade filtration our pure water coconut carbon filter is extensively tested and verified to meet health and product standards.

Universal 20-inch replacement elegantly designed at 4. 5” x 20”, pentek, omni, trojan, whirlpool, culligan, dupont, kenmore, clearChoice, Watts, iSpring, Hydronix, Omnifilter, Pelican, it will fit all standard 20 inch whole house filtration systems of 3M, GE, Filtrete, etc. Aquaboon – your smartest coconut shell water filter solution! Lifetime - 6 month Replace once or twice times a year, depending on the water quality.
BrandAquaboon #ad
ManufacturerAquaboon #ad
Height4.61 Inches
Length22.01 Inches
Weight6.75 Pounds
Width4.88 Inches
Part NumberB01M0OBWUP
ModelCOMIN18JU057039

8. Geekpure

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Geekpure 20-Inch Universal Compatible Carbon Block Water Filter Cartridge for Whole House Water Filter- 4.5 Inch x 20 Inch

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Geekpure #ad - Enjoy better water from every tap and every appliance in the whole house. 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. Life time:6-12 months or 100k gallons depends on Usage Amount and Feed Water Quality, taste & odors, these can be used for residential and commercial applications. Filter is individually wrapped&sealed and extend shelf life. Carbon block filter is used to remove chlorine, 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

9. Aquaboon

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32-450-20-GREEN, 2C-20BB, 33003117-1, Aquaboon 5 Micron 20" x 4.5" CTO Carbon Block & Sediment Replacement Filter Cartridges Set | 2 set, 4PK COMPATIBLE WITH: FC25BX4, 155358-43, DGD-5005-20, EP20-BB

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Aquaboon #ad - This durable coconut shell activated carbon water filters is mainly designed to remove volatile organic compounds, in particular chlorine. The inner core of a sediment filter cartridge is denser than the outer core, such as sand, dirt, thereby making it serve longer. Healthy set our set of sediment and carbon filter cartridges will help you to keep your water purified and fresh. Carbon filters work on the basis of the absorption process and sediment filters provides mechanical filtration.

Our filter cartridges has been thoroughly tested and verified to meet health and product standards. Quality mechanical filtration ensure to remove more contaminants, which allows the product to trap finer and finer particles, and rust particles. Compatible carbon cartridges bluonics blcto20x2, pentek 255678-43, geekpure bc20-bb-5, comin16ju023031, cto20b4, tier1 ep5-20bb, express water fltwh2045c, water filters depot wfd wf-cb205-bb, fltwh2045c02, ep20-bb, harmsco hac-bb-20-w, ronaqua 2c-20bb, wholesale market llc bbcto-20b4, clearchoice ccs031, kx-matrikx-cto2-hd20, fhr-20-45-carbon-kit, blcto20x4, max water usa inc.1104114-4, 6c-20bb, ispring fc25bx4, purenex 2c-20bb, kx matrikx 32-450-20-greeN, RA-2CTO-20BB, etc.

It has the advantage of having layers with graded density, large and small particles from drinking water, sludge, it's a sieve with porosity that allows only water to pass through. By installing a carbon filter, you can forget about unpleasant taste and smell. Sediment 100% pure polypropylene. Compatible sediment cartridges 3m aqua-pure 5618903, filter specialist cmmf0520-45w1, liquatec sdf-45-2005, spiropure sp-dd-5005-20bb, pura 33003117-1, cwd-pentek-dgd-5005-20, purenex 4s-20b-5m, 2c-20bb5, viqua cmb-520-hf, ap810-2, neo-pure mbgc-45200-05, watts fpmb-bb5-20, ispring fp25b, tier1 p5-20bb, valuetrex vx05-20bb, pentek 155358-43, wholesalemarketllc pp-20b10, clearchoice ccs034, h2o lf-pp-005-508, bluonics PP-20B4, dgd-5005-20, fp25bx2, bbsed-20b4, ronaqua 10s-20bb5, etc.
BrandAquaboon #ad
ManufacturerAquaBoon #ad
Height20 Inches
Weight17 Pounds
Part Number43222-6660

10. EXPRESS WATER

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Express Water – 2 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 - Whole house water filter system: reduce harmful impurities from your entire home’s water with Express Water’s Water Filtration System and easy to replace Water Filter Replacement Cartridges. 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.

The highest quality, long-lasting materials give you up to 100, 000 gallons of water filtration. Express water’s 5 micron activated Carbon Block ACB Filter 2 Pack, 4. 5” x 20” size fits all standard 4. 5” x 20” whole home water filter system housings. 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. Coconut carbon provides an added layer of filtration with the freshest taste.
BrandEXPRESS WATER #ad
ManufacturerExpress Water #ad
Height4.5 Inches
Length20 Inches
Weight10 Pounds
Width4.5 Inches
Part NumberFLTWH2045C02-CA
ModelFLTWH2045C02