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  Our Catalog   Water Purification   Replacement Water Filters   Replacement Under-Sink Water Filters

Replacement Under-Sink Water Filters - Huge Savings! Save up to 16%


Huge Savings! Up to 16% off on Replacement Under-Sink Water Filters at Frontier Science. Top brands include AquaFX, Ronaqua, Pentek, 3M, Doulton, 3M Water Filtration Products, Nimbus, Everpure, Mountain Plumbing, Acqua Primo Water Systems, iSpring, AquaPure, & APEC Water Systems. Hurry! Limited time offers. Offers valid only while supplies last.



The AquaFX Barracuda RO/DI System 50 GPD
The AquaFX Barracuda RO/DI System 50 GPD
In Stock
$139.52
$139.39

mpn: Bar-100, ean: 0610074278856,

The AquaFX Barracuda RO/DI System 50 GPDIncludes a 2-micron Chlorine Guzzler Carbon Block Filter. Includes a High Flow and High Rejection TFC Membrane. Pressure Gauge is Included. 200 GPD (Gallons Per Day). Solid Aluminum Bracket. ...


5MC-25PK 5 Micron 10-Inch carbon Block Water Filter Cartridge Coconut Shell Activated Carbon, 25-Pack
5MC-25PK 5 Micron 10-Inch carbon Block Water Filter Cartridge Coconut Shell Activated Carbon, 25-Pack
In Stock
$159.99

mpn: 5MC-25PK, ean: 0780347035285,

Product Description This is a 25 filters set for a standard Reverse Osmosis Water Filtration Unitor or any type of Water Filtration Unit with 10" housing. The specifications of the set are as follows: 6 of Block Activated Carbon filters - Block Carbo...


Pentek Bbfs-22 Two Big Blue Housing Water Filtration System (BBFS-22)
Pentek Bbfs-22 Two Big Blue Housing Water Filtration System (BBFS-22)
In Stock
$170.86

mpn: BBFS-22, ean: 0132017511450,

Description:?Pentek BBFS-22 Water Filter System Specs: Dimensions of the System: 15-1/4" x 8-1/2" x 26-1/2" (388 mm x 216 mm x 673 mm) Maximum Temperature: 100?F (37.8?C) Maximum Pressure: 90 psi (6.2 bar) Flow Rate* GPM (L/min): up to 40 gpm (151.4 ...


(Package Of 12) Pentek CBC-10 Cyst Reduction Water Filters (9-3/4'' x 2-7/8'')
(Package Of 12) Pentek CBC-10 Cyst Reduction Water Filters (9-3/4" x 2-7/8")
In Stock
$176.19

mpn: CBC-10, ean: 0701001535231,

An economical 12-pack of 10 x 2.5-inch Pentek CBC-10 carbon block water filters specially designed for cyst reduction. The CBC-10 gives you safer drinking water, demonstrated to eliminate 99.95% of cysts in product testing. It also offers you premium...


Pentek EPM-20 10 Micron Standard 20 Inch Carbon Block Water Filter 12 Pack
Pentek EPM-20 10 Micron Standard 20 Inch Carbon Block Water Filter 12 Pack
In Stock
$139.32

mpn: EPM_20, ean: 0635510410294,

EPM-20 Pentek Whole House Filter Replacement Cartridge (12-Pack) reduces sediment and chlorine taste and odor while keeping a low pressure drop for an affordable price. This replacement meets a wide variety of filtration needs fitting into standard s...


3M High Flow Series Replacement Cartridge, Model HF60-CL, 5625901
3M High Flow Series Replacement Cartridge, Model HF60-CL, 5625901
By 3M
In Stock
$119.30

mpn: 70020274927,

3M HF60-CL Replacement Water Replacement Water Filter Cartridge 56259-01. 3M HF60-CL Water Filter Replacement Water Replacement Water Filter Cartridge Features: 3M HF60-CL Water Filter Replacement Water Replacement Water Filter Cartridge Features: Th...


DOULTON W9381105  RIO 2000 Ceramic Multi-Candle Filter Cartridge
DOULTON W9381105  RIO 2000 Ceramic Multi-Candle Filter Cartridge
In Stock
$214.74
$182.71
You Save: 15%

mpn: DOULTON-W9381105, ean: 0799705702370,

4.5 out of 5 stars with 41 reviews
Choosing a superior whole house filtration system doesn't need to be a challenge. With Doulton's Rio2000 module whole house, candle filtration system, you can put your mind at ease. The Rio2000 provides outstanding filtration capabilities that remove...


Doulton Ultracarb 10'' Water Filter Candle, 4-pack (W9123053)
Doulton Ultracarb 10" Water Filter Candle, 4-pack (W9123053)
In Stock
$130.34
$129.99

mpn: DOULTON-W9123053-4PK, ean: 0015568398483,

Product Description The Doulton W9123053 UltraCarb 10-inch Filter Candle features four stages of filtration in a single cleanable cartridge. It reduces suspended solids, chlorine, lead and other trace contaminants, as well as improving taste. Also kn...


3M Water Filtration Products BREW120 BREW120-MS Model 5616001 Filtration System
3M Water Filtration Products BREW120 BREW120-MS Model 5616001 Filtration System
In Stock
$101.95

mpn: BREW120, ean: 0016145801167,

3M Water Filtration Products, High Flow Series Model BEV135 single cartridge water filtration system helps to improve the taste, appearance and consistency of your beverages at flow rates up to 1.67 gym (6.3 lap).Sanitary Quick Change (SQC) encapsula...


Nimbus 104592 Watermaker Five 4-Stage Filter
Nimbus 104592 Watermaker Five 4-Stage Filter
In Stock
$115.00

mpn: 104592, ean: 0633841881721,

Nimbus 104592 Watermaker Five 4-Stage Cartridge. Nimbus WaterMaker 5 4-Stage 104592 Cartridge Features: Nimbus WaterMaker 5 4-Stage 104592 Cartridge Features: The WaterMaker Five Reverse Osmosis System produces high quality drinking water quickly and...


(Package Of 6) Everpure MC-2 Replacement Filter Cartridge EV9612-56
(Package Of 6) Everpure MC-2 Replacement Filter Cartridge EV9612-56
In Stock
$334.99

mpn: CWD-EVERPURE-EV9612-56,new+6, ean: 0700999871451,

The best filtration for the food service industry comes from Everpure EV9612-56 cartridges. They are built to manage the extreme volume of water filtration required in the food service industry. Brands like McDonalds and Starbucks trust Everpure sy...


3M Water Filtration Products ICE 140-S 5616203 Filtration System
3M Water Filtration Products ICE 140-S 5616203 Filtration System
By 3M
In Stock
$164.95
$162.24
You Save: 2%

mpn: ICE 140-S,

3M Water Filtration Products Models ICE140-S single cartridge water filtration systems help provide consistent high quality water for commercial ice machines by reducing the effects of sediment, chlorine taste and odor and scale. Built-in scale inhib...


Mountain Plumbing MT1250XL/RFC Mountain Pure Carbon Replacement Filter
Mountain Plumbing MT1250XL/RFC Mountain Pure Carbon Replacement Filter
In Stock
$116.76
$105.00
You Save: 10%

mpn: FBA_MT1250XL/RFC, ean: 0638441251936,

4.5 out of 5 stars with 31 reviews
The Mountain Plumbing MT1250XL filtration system is the next generation of water filtration from Mountain Plumbing fixtures. This system allows users to quickly and efficiently change cartridges year after year without turning off their water supply ...


3M Cuno Water Factory Systems SQC4 Compatible Replacement Water Filter Kit
3M Cuno Water Factory Systems SQC4 Compatible Replacement Water Filter Kit
In Stock
$159.99

mpn: SQC4 Compatible Replacement Filter Kit, ean: 0684758032706,

The Acqua Primo SQC4 Compatible Replacement Water Filter Kit includes replacement filters for your SQC4 reverse osmosis drinking water system. It includes: 1 = 66-4706G2 Compatible Membrane, 1 = 47-55702G2 Compatible Sediment Filter, 1 = 47-55710G2 C...


(Package Of 6) Pentek R30-BB Pleated Polyester Water Filters (9-3/4'' x 4-1/2'')
(Package Of 6) Pentek R30-BB Pleated Polyester Water Filters (9-3/4" x 4-1/2")
In Stock
$115.35
$115.30

mpn: R30_BB_6_PACK, ean: 0700999878528,

Washable and reusable, the R30-BB (6-Pack) Pentek whole house water filter replacement cartridge is an economical way to ensure the water in your home or business remains virtually free of sediment. A genuine OE part, designed by Pentek to be resista...


Everpure TFC-RO Water Filter Replacement Cartridge (EV9273-70)
Everpure TFC-RO Water Filter Replacement Cartridge (EV9273-70)
SKU: #EVERPURE-EV9273-70
In Stock
$224.00
$189.00
You Save: 16%

sku: EVERPURE-EV9273-70, mpn: EV9273-70, ean: 0054568550910,

4.6 out of 5 stars with 37 reviews
Membrane ""B"" filter cartridge for Everpure reverse osmosis water filtration systems.Cartridge replacement is easy just like changing a light blub. Not for sale in California. ...


iSpring F17U100 2-Year Replacement Filter Set for 100GPD 6-Stage UV Reverse Osmosis Water Filter, Fits iSpring RCC1UP RCC7U 17pcs 4SED 4GAC 4CTO 2T33 1MC1 2UVB11
iSpring F17U100 2-Year Replacement Filter Set for 100GPD 6-Stage UV Reverse Osmosis Water Filter, Fits iSpring RCC1UP RCC7U 17pcs 4SED 4GAC 4CTO 2T33 1MC1 2UVB11
In Stock
$170.74
$165.62
You Save: 3%

mpn: F17U100, ean: 0662425058549,

What is included: - 4 pieces of 5 Micron Sediment Filters #FP15 - 4 pieces of Granular Activated Carbon (GAC) Filters #FG15 - 4 pieces of 5 Micron CTO Carbon Filters #FC15 -1 piece of 100GPD RO membrane #MC1 - 2 pieces of Post Carbon Inline filters #...


Aqua-Pure AP810 Replacement Cartridge (Pack of 4)
Aqua-Pure AP810 Replacement Cartridge (Pack of 4)
In Stock
$181.00
$168.53
You Save: 7%

mpn: AP810-4, ean: 0700999868611,

4.6 out of 5 stars with 59 reviews
Replacement cartridge for AP800 Series Large Capacity Housings. Reduces sediment.Premium performance filter cartridge. Nominal micron rating of 5. Fits most large diameter housings. ...


Everpure EV9324-02 Insurice Twin i2000 2 System
Everpure EV9324-02 Insurice Twin i2000 2 System
In Stock
$312.87
$296.90
You Save: 5%

mpn: EV9324-02, ean: 0115971037099,

4.1 out of 5 stars with 54 reviews
Everpure EV932402 INSURICE TWIN-I2000 (2)Reduces chlorine taste and odor and other offensive contaminants. New and improved Micro-Pure II media inhibits the growth of bacteria. Precoat submicron technology reduces dirt and particles as small as 1/2 m...


APEC Water Systems UG-UVSET-1-4 UV Ultra Violet Sterilizer Water Filter Kit with 1/4 inch Quick Connect
APEC Water Systems UG-UVSET-1-4 UV Ultra Violet Sterilizer Water Filter Kit with 1/4 inch Quick Connect
In Stock
$135.00

mpn: UG-UVSET-1-4, ean: 0851001007297,

Slim & compact UV sterilizer disinfects water up to 1 gpm. Durable polypropylene housing with stainless steel interior treats water naturally without leaving taste or odor. Industry standard ¼” fittings for versatility & adaptability. Installs qui...



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