Top 10 Refillable Filter Cartridge – Replacement Under-Sink Water Filters

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1. CuZn Water Systems

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Empty Water Filter Cartridge Universal Slimline 2.5" D x 10" H Clear by CuZn, Refillable

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CuZn Water Systems #ad - Universal fit for slimline 2. 5"d x 10"h, big blue 4. 5"d x 10"h & big Blue 4. 5" x 20"H. Durable Construction. Available exclusively From CuZn Water & Air Filters. Excellent Flow Rate.
BrandCuZn Water Systems #ad
ManufacturerCuZn Water Systems #ad
Part NumberEmpty Cartridge
ModelEmpty Cartridge

2. Hydronix

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Hydronix EC-2510W White Empty Standard Size Water Filter Cartridge, Durable Construction Universal Pre/Post Use 2.5 x 10

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Hydronix #ad - Excellent flow rate. 2. 5 x 10 inches. White refillable cartridge. Made in Taiwan. Durable construction.
BrandHydronix #ad
ManufacturerHydronix #ad
Height10 Inches
Length2.5 Inches
Width2.5 Inches
Part NumberEC-2510W
ModelEC-2510W

3. LPS Lowpricesupply

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LPS Lowpricesupply Replacement Grille for The CA-90 ductless Fan Grille/Louver with Refillable Unscented Filter Cartridge White

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LPS Lowpricesupply #ad - Replacement grille beige for the ca-90 ductless fan grille/louver Dimensions 11-15/16" × 5-5/8" × 3/4" w/ Refillable Unscented Filter Cartridge- Beige.
BrandLPS Lowpricesupply #ad
ManufacturerR.H #ad

4. Oceanic Water Systems

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Catalytic Carbon/KDF 55, Chloramine Removal, Whole House Big Blue Refillable Water Filter Cartridge 4.5" x 20"

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Oceanic Water Systems #ad - We recommend replacement every 6 months. High standard filtration - verified by independent laboratory testing to meet NSF / ANSI 58 Standard. The best filtration - catalytic carbon and high purity ionically charged copper and zinc granules create full coverage filtration which means your filter lasts longer.

Take the contaminants out of your home - drink from any faucet without fear when we remove Iron, Mercury, Arsenic, Lead, Chloramine, Nickel, Sulfur, Cadmium, Hydrogen Sulfide, Chlorine, and Aluminum. This is based on average water quality. The kdf filter is good for up to 100, 000 gallons or 6-12 months.

Highest grade filtration media available. Superior taste and odor removal capabilities dependent on local water quality, chemistry, temperature, and conditions. Your filter life may be different depending on your water quality, and incoming pressure. Fits most standard big blue 20" housings 4. 5" x 20". Save money with this refillable inline filter.
BrandOceanic Water Systems #ad
ManufacturerOceanic Water Systems #ad
Height20 Inches
Length4.5 Inches
Weight6 Pounds
Width4.5 Inches

5. Oceanic Water Systems

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Granular Activated Carbon GAC + KDF 55, Whole House Big Blue Refillable Water Filter Cartridge 4.5" x 20", Chlorine Removal

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Oceanic Water Systems #ad - Superior taste and odor removal capabilities. On average, the kdf filter is good for up to 100, 000 gallons or 6-12 months. Fits most standard big blue 20" housings 4. 5" x 20". The best filtration - coconut shell Activated Carbon and high purity ionically charged copper and zinc granules create full coverage filtration which means your filter lasts longer.

Take the contaminants out of your home - drink from any faucet without fear when we remove Chlorine, Chlorine, Mercury, Nickel, Cadmium, Chloramine, and Aluminum. Highest grade filtration media available.

Your filter life may be different depending on your water quality, temperature, and incoming pressure. High standard filtration - verified by independent laboratory testing to meet NSF / ANSI 58 Standard. We recommend replacement every 6 months. Save money with this refillable inline filter. This is based on average water quality.
BrandOceanic Water Systems #ad
ManufacturerOceanic Water Systems #ad
Height20 Inches
Length4.5 Inches
Weight8.75 Pounds
Width4.5 Inches

6. Oceanic Water Systems

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GAC Catalytic Carbon + Birm + KDF 85: Removes Iron, Hydrogen Sulfide, Rotten Egg Smell, Manganese, 4.5" x 10" Whole House Big Blue Refillable Water Filter Cartridge

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Oceanic Water Systems #ad - Superior taste and odor removal capabilities. Kdf process media to safely reduce or remove iron, sulfur, hydrogen sulfide, manganese and more from the water supply. Whole house water filter with Mixture of Activated Catalytic Carbon, Birm and KDF 85. Fits most standard big Blue 10" housings 4. 5" x 10". Very effective at removing h2s smell from Well Water Depends on Local water quality, chemistry, and conditions which vary dramatically from location to location. Save money with this refillable filter. Highest grade filtration media available.
BrandOceanic Water Systems #ad
ManufacturerOceanic Water Systems #ad
Height10 Inches
Length4.5 Inches
Weight8.75 Pounds
Width4.5 Inches

7. Nelsen

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Nelsen Refillable Filter Cartridge, 10" x 4-1/2"

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Nelsen #ad - Inner sediment Filter Attached. Durable construction. 4. 5 x 10 inches. White refillable cartridge. Excellent flow rate.
BrandNelsen #ad
ManufacturerNelsen #ad
Height10 Inches
Length4.5 Inches
Weight0.75 Pounds
Width4.5 Inches
Part NumberNRC-BB10

8. LiquaGen Water

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LiquaGen Water Empty Inline REFILLABLE Cartridge-2"X 10" | for DI/Carbon/Alkaline

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LiquaGen Water #ad - This product is great for filling DI, Alkaline, Carbon, and other media for water purifiers. Size : 2" x 10". B twp clips 2" x 2". This item includes: a two male elbows w/ two 1/4" 90 degree quick adapters for your water lines.
BrandLiquaGen Water #ad
ManufacturerLiquaGen Water #ad
Part NumberB00KI1ZXO4
Model703610776517

9. Oceanic Water Systems

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GAC Catalytic Carbon/Birm + KDF 85: Removes Iron, Manganese, Hydrogen Sulfide, Rotten Egg Smell, 4.5" x 20" Whole House Big Blue Refillable Water Filter Cartridge

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Oceanic Water Systems #ad - Fits most standard big Blue 20" housings 4. 5" x 20". Highest grade filtration media available. Save money with this refillable inline filter. Filter should be flushed initially for at least 20 minutes until water runs clear. Whole house water filter with Mixture of Activated Catalytic Carbon, Birm and KDF 85. Kdf process media to safely reduce or remove iron, hydrogen sulfide, sulfur, manganese and more from the water supply. Superior taste and odor removal capabilities Dependent on local water quality.
BrandOceanic Water Systems #ad
ManufacturerOceanic Water Systems #ad
Height20 Inches
Length4.5 Inches
Weight8.75 Pounds
Width4.5 Inches

10. Premier Water Systems

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Refillable 10" Deionization DI Resin Cartridge Filter | for Aquarium Reef Reverse Osmosis DI Systems RO/DI MBD-30 DI Resin

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Premier Water Systems #ad - Refillable - uses approx. Resintech mbd-30 nuclear grade Mixed Bed DI Resin. Replace every 6 months, depending on water quality. Includes the clear Refillable Cartridge & DI Resin. 1 lb of resin. Ideal for making 0 tds ultra pure water after RO system for saltwater, freshwater, and reef aquariums. Fits most industry standard 10-Inch RODI filter housings.
BrandPremier Water Systems #ad
ManufacturerOceanic Water Systems #ad
Weight1.25 Pounds
Model2510MBD30