Top 9 CTO Carbon Filter 20 – Replacement Under-Sink Water Filters

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1. iSpring

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Grey, iSpring FC25B High Capacity 20” x 4.5” Water Filter Replacement Cartridge Whole House Big Blue CTO Carbon Block, 4.5" x 20"

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iSpring #ad - 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. 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, the filters don’t reduce Total Dissolved Solids TDS, consider our iSpring Reverse Osmosis RO systems. 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. 5” filter cartridges have a minimum impact on water flow up to 15 GPM and require minimum maintenance. 5” housings, including brand name models. S. Please unwrap the cartridges before use. Activated carbon is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb.

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. The 20” x 4. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. Local support team.
BrandiSpring #ad
ManufactureriSpring #ad
Height20 Inches
Length4.5 Inches
Weight5.2 Pounds
Width4.5 Inches
Part NumberFC25B
ModelFC25B

2. Ronaqua

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4pcs Big Blue CTO Carbon Block Water Filters 4.5" x 20" Whole House Cartridges Set WELL-MATCHED with CB-45-2005, FLTWH2045C02 and PRL-RCL, FC25B

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Ronaqua #ad - Product lifetime - 20, 000 gallons - replace two or three times a year - depending on your water quality. Keeps water fresh by reducing and removing iron, herbicides, pesticides, manganese, hydrogen sulfide, chlorine, and other industrial chemicals.

Universal replacement for all 20" big blue water filter housingand and well-matched models of cartridges: pelican water prl-rcl, cb-45-2010, pelican CB-BB-20, iSpring FC25B, CBC-20BB, pentek ep20-bb, bc20-BB-5, pentek 155783-43, CB-BB-20, Hydronix CB-45-2005, Watts WCBCFF20, epm-20bb, FLTWH2045C02. Dimensions: 20 inches x 4. 5 inches 508 cm x 11. 43 cm. Well-fit following housings: pentek bbfs-222, hydronix hx-hf45-20blbk10, water filters depot wfd h-20bb-1pr, ispring hb28bx2 and wgb12b, h2o splash whbb20t1bl, hFPP-1-PR20, 150235 and 150233, Aquaboon AB-WH20BB, geekpure bb-20b, H-H201BBE, simpure rswhb002z_s8, premier water systems wf45-20-1npt, Max Water B078FPN68M.

This filter is wrapped and sealed and meets nsf national Science Foundation Standards and Regulations.
BrandRonaqua #ad
ManufacturerRonaqua #ad
Height20 Inches
Length20 Inches
Width4.5 Inches
Part Number4C-20BB

3. Aquaboon

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

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Aquaboon #ad - It will also help you get rid of chemicals such as pesticides and herbicides. It has the advantage of having layers with graded density, it's a sieve with porosity that allows only water to pass through. Make your home uncontaminated by removing chlorine and other harmful industrial chemicals - drink the water knowing that it is 100% safe. Healthy set our set of sediment and carbon filter cartridges will help you to keep your water purified and fresh.

Compatible sediment cartridges 3m aqua-pure 5618903, ronaqua 10s-20bb5, h2o lf-pp-005-508, liquatec sdf-45-2005, tier1 p5-20bb, bluonics pp-20b4, purenex 4s-20b-5m, fp25bx2, filter specialist cmmf0520-45w1, watts fpmb-bb5-20, ispring fp25b, valuetrex vx05-20bb, spiropure sp-dd-5005-20bb, ap810-2, 2c-20bb5, clearchoice ccs034, neo-pure mbgc-45200-05, bbsed-20b4, pentek 155358-43, CWD-PENTEK-DGD-5005-20, dgd-5005-20, wholesalemarketllc pp-20b10, viqua cmb-520-hf, pura 33003117-1, etc.1104114-4, comin16ju023031, ra-2cto-20bb, kx-matrikx-cto2-hd20, 6c-20bb, cto20b4, purenex 2c-20bb, clearchoice ccs031, wholesale market llc bbcto-20b4, ronaqua 2c-20bb, fltwh2045c02, kx matrikx 32-450-20-green, Tier1 EP5-20BB, geekpure bc20-bb-5, ep20-bb, express Water FLTWH2045C, Water Filters Depot WFD WF-CB205-BB, ispring fc25bx4, etc.

Sediment 100% pure polypropylene. 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. Carbon activated carbon water filter comes in sealed packaging, it will works better and lasts longer. This durable coconut shell activated carbon water filters is mainly designed to remove volatile organic compounds, in particular chlorine.
BrandAquaboon #ad
ManufacturerAquaBoon #ad
Height20 Inches
Weight17 Pounds
Part Number43222-6660

4. iSpring

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CTO Carbon Block, Fits WCB32C, WCB32O & RCB3P, Pack of 4, iSpring FC25X4 High Capacity 20” x 2.5” Water Filter Replacement Cartridges

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iSpring #ad - If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis RO systems. The 20” x 2. 5” filter cartridges have a minimum impact on water flow up to 12 GPM and require minimum maintenance. 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. They are tested by an independent third-party to meet NSF/ANSI standards. Top-notch quality: our fc25 cto carbon block filters are made of high-quality coconut shell carbon for maximum filtration efficiency and filter life. Standard size: our filter set fits standard 20” x 2. 5” housings, including brand name models. Protect your family and household appliance from chlorine and more: Say goodbye to smelly, bad tasting water! The FC25 carbon block filter is specially designed to remove up to 99% of chlorine from water as well as various other contaminants that cause unpleasant odors and tastes.

The filters have a capacity of 30, 000 gallons of water, enough to supply a family of four with clean water for half a year. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. Peace of mind customer service: register online to activate your extended manufacturer warranty and life-time free tech support from U. S.
BrandiSpring #ad
ManufactureriSpring Water Systems #ad
Height10 Inches
Length2.5 Inches
Weight0.5 Pounds
Width2.5 Inches
Part NumberFC25x4
ModelFC25X4

5. Aquaboon

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

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Aquaboon #ad - Carbon filters work on the basis of the absorption process and sediment filters provides mechanical filtration. This durable coconut shell activated carbon water filters is mainly designed to remove volatile organic compounds, so you can be sure that it will not go to waste, in particular chlorine. Compatible sediment cartridges 3m aqua-pure 5618903, neo-pure mbgc-45200-05, bbsed-20b4, purenex 4s-20b-5m, pentek 155358-43, fp25bx2, dgd-5005-20, clearchoice ccs034, viqua cmb-520-hf, liquatec sdf-45-2005, ispring fp25b, cwd-pentek-dgd-5005-20, filter specialist cmmf0520-45w1, Ronaqua 10S-20BB5, bluonics pp-20b4, h2o lf-pp-005-508, AP810-2, WholesalemarketLLC PP-20B10, 2c-20BB5, pura 33003117-1, spiropure sp-dd-5005-20bb, watts fpmb-bb5-20, tier1 p5-20bb, valuetrex vx05-20bb, etc.

The inner core of a sediment filter cartridge is denser than the outer core, dirt, such as sand, and rust particles. Healthy set our set of sediment and carbon filter cartridges will help you to keep your water purified and fresh. Sediment 100% pure polypropylene. 104114-4, etc. Make your home uncontaminated by removing chlorine and other harmful industrial chemicals - drink the water knowing that it is 100% safe.

Quality mechanical filtration ensure to remove more contaminants, sludge, it's a sieve with porosity that allows only water to pass through. Our filter cartridges has been thoroughly tested and verified to meet health and product standards. Compatible carbon cartridges bluonics blcto20x2, clearchoice ccs031, geekpure bc20-bb-5, kx-matrikx-cto2-hd20, fltwh2045c02, harmsco hac-bb-20-w, ep20-bb, express water fltwh2045c, ronaqua 2c-20bb, 6c-20bb, ispring fc25bx4, Tier1 EP5-20BB, fhr-20-45-carbon-kit, wholesale market llc bbcto-20b4, water filters depot wfd wf-cb205-bb, purenex 2c-20bb, kx matrikx 32-450-20-green, pentek 255678-43, blcto20x4, cto20b4, ra-2cto-20bb, comin16ju023031, MAX WATER USA Inc.
BrandAquaboon #ad
ManufacturerAquaBoon #ad
Height5 Inches
Length20.2 Inches
Weight9 Pounds
Width9.2 Inches
Part NumberB01MA240U1

6. Aquaboon

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

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Aquaboon #ad - Compatible replacement filters clearchoice 84642, trojan cb-bb-20, cb-45-2010, hydronix cb-45-2005, pelican CB-BB-20, pentek 155783-43, CBC-20BB, ispring fc25b, 84641, epm-20bb, watts wcbcff20, etc. 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”, omnifilter, watts, omni, it will fit all standard 20 inch big blue Whole House filtration systems of 3M, GE, Hydronix, Kenmore, dupont, trojan, Pelican, Whirlpool, Culligan, iSpring, Pentek, ClearChoice, filtrete, etc. Aquaboon – your smartest coconut shell water filter solution! Lifetime - 6 month Replace once or twice times a year, so you can trust it won’t go to waste, depending on the water quality.

Long lasting your carbon block activated water filter comes in an airtight packaging, works better and lasts longer. Your easy and smart coconut shell carbon filter. 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. Have a piece of mind knowing your water is purified with the superior Aquaboon filtration system.
BrandAquaboon #ad
ManufacturerAquaboon #ad

7. Ronaqua

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6 PCS Big Blue CTO Carbon Block Water Filters 4.5" x 20" Whole House Cartridges Set WELL-MATCHED with CB-45-2005, FLTWH2045C02 and PRL-RCL, FC25B

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Ronaqua #ad - Universal replacement for all 20" big blue water filter housing and well-matched models of cartridges: pelican water prl-rcl, cbc-20bb, pelican cb-bb-20, pentek eP20-BB, Watts WCBCFF20, bc20-bb-5, cb-45-2010, Hydronix CB-45-2005, ispring fc25b, pentek 155783-43, EPM-20BB, CB-BB-20, FLTWH2045C02.

Product lifetime - 20, 000 gallons - replace two or three times a year - depending on your water quality. This filter is wrapped and sealed and meets nsf national Science Foundation Standards and Regulations. Dimensions: 20 inches x 4. 5 inches 508 cm x 11. 43 cm. Well-fit following housings: pentek bbfs-222, aquaboon ab-wh20bb, ispring hb28bx2 and wgb12b, simpure rswhb002z_s8, geekpure bb-20b, h2o splash whbb20t1bl, h-h201bbe, HFPP-1-PR20, hydronix hx-hf45-20blbk10, 150235 and 150233, water filters depot wfd h-20bb-1pr, premier water systems wf45-20-1NPT, Max Water B078FPN68M.

Keeps water fresh by reducing and removing iron, herbicides, hydrogen sulfide, chlorine, pesticides, manganese, and other industrial chemicals.
BrandRonaqua #ad
ManufacturerRonaqua #ad
Height15 Inches
Length21 Inches
Weight42 Pounds
Width12 Inches
Part Number6C-20BB
Model6C-20BB

8. BLUONICS

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String-wound Sediment, CTO Carbon & Sediment Filter Set for our Well Water System > 3pcs 4.5" x 20" Whole House Cartridges

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BLUONICS #ad - 1st stage: 20 micron String Wound Sediment Filter. All our filters individually wrapped for freshness and protection while in shipment. Replacement filters for Amazon item B07GV5HVQ4. 3rd stage: 1 Micron Sediment Filter. 2nd stage: 5 micron Carbon Block Filter.
BrandBLUONICS #ad
ManufacturerWholesale Market LLC #ad
Part NumberR110WELLBB

9. Aquaboon

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FXWTC, WHEF-WHWC, WHKF-WHWC 6-PACK, WFPFC8002, Aquaboon Coconut Shell Water Filter Cartridge | Activated Carbon Block CTO | Universal 5 Micron 10 inch Cartridge | Compatible with DWC30001

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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. Ultra-high grade filtration – our pure water coconut carbon filter is extensively tested and verified to meet health and product standards.

Have a piece of mind knowing your water is purified with the superior Aquaboon filtration system. Aquaboon – your smartest coconut shell water filter solution! Lifetime - 6 month Replace once or twice times a year, so you can trust it won’t go to waste, depending on the water quality. 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. Enjoy long-lasting coconut shell activated carbon water filters. Compatible replacement filters ace hardware 84608, gxwh20f, fltr-2112, whkf-whwc, to1-ds, c1, fxwtc, pentair dev9108-15, sears 34370, everpure cg5-10, wfpfc9001, flotec to1, apex ir-40, to1-ss24-01, ge fx12p, optipure w-5, to1-ss, to1-ss24-02, to1-s, whirlpool whef-whwc, dupont dwc30001, cto-10, nucalgon 4711-87, TO1DS, to-1, omnifilter to1, pure-tel w5cip, WFDWC30001, cor10b5, dev9108-15, 46942, cornelius cor10b1, TO1-D, watts f109009, pfc8002, wfpfc8002, to1-ss24-05, ecolab 9320-1002, etc.

Long lasting – your carbon block activated water filter comes in an airtight packaging, works better and lasts longer.
BrandAquaboon #ad
ManufacturerAquaboon #ad
Height9.75 Inches
Weight6 Pounds
Part NumberB01LYBM876