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Reverse Osmosis Filter Kits

Browse reverse osmosis replacement filter kits for routine system maintenance. Kits may include sediment prefilters, carbon filters, post-filters, and an RO membrane, depending on the model and stage count. Match the kit to your system brand or cartridge dimensions, membrane capacity, connection type, included stages, certifications, and recommended replacement schedule.

Filters

Original price $19.99 - Original price $19.99
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$19.99
$19.99 - $19.99
Current price $19.99

iFilters CBSM-2510 Coconut Shell CTO Carbon Block Drinking Water Filter – 2.5" x 10", 0.5 Micron High-Performance Filtration for Clean, Great-Tasti...

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Original price $19.99 - Original price $19.99
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$19.99
$19.99 - $19.99
Current price $19.99
Original price $39.99 - Original price $39.99
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$39.99
$39.99 - $39.99
Current price $39.99

Hydronix Reverse Osmosis (RO) Replacement Filter Set – 5 Stage Kit (50 GPD Membrane, 5 Pcs) Compatible with Standard 5-Stage RO Systems The Hydroni...

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Original price $39.99 - Original price $39.99
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$39.99
$39.99 - $39.99
Current price $39.99
Original price $150.00 - Original price $150.00
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$150.00
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Current price $150.00

Aquatrol CAT110E – 10% Crosslink Premium Grade Cation Resin for Water Softening (1 CuFt) The Aquatrol CAT110E Premium Grade Cation Resin is a high-...

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Original price $150.00 - Original price $150.00
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$150.00
$150.00 - $150.00
Current price $150.00
Original price $10.99 - Original price $10.99
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$10.99
$10.99 - $10.99
Current price $10.99

Hydronix CB-25-1005 Whole House RO Coconut Carbon Block Water Filter – 5 Micron, 2.5" x 10" Premium Carbon Block Filtration for Cleaner, Better-Tas...

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Original price $10.99 - Original price $10.99
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$10.99
$10.99 - $10.99
Current price $10.99
Original price $78.00 - Original price $78.00
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$78.00
$78.00 - $78.00
Current price $78.00

OEM Replacement Water Filter Cartridge Set for Hydro Guard HDG-45-SET 4-Stage Drop-In Reverse Osmosis System Keep your water filtration system oper...

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Original price $78.00 - Original price $78.00
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$78.00
$78.00 - $78.00
Current price $78.00
Original price $139.99 - Original price $139.99
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$139.99
$139.99 - $139.99
Current price $139.99

Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set – 50 GPD The Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set is...

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Original price $139.99 - Original price $139.99
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$139.99
$139.99 - $139.99
Current price $139.99
Original price $7.00 - Original price $7.00
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$7.00
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Current price $7.00

Hydronix SDC-25-1005 polypropylene sediment filters have a particle retention Size of 5 microns and are used in residential and commercial water fi...

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Original price $7.00 - Original price $7.00
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$7.00
$7.00 - $7.00
Current price $7.00
Original price $38.00 - Original price $38.00
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$38.00
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Current price $38.00

5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For any standard 5 Stage RO system. Sediment, GAC, CTO Carbon Blo...

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Original price $38.00 - Original price $38.00
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$38.00
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Current price $38.00
Original price $0.00 - Original price $0.00
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$2.80
$2.80 - $2.80
Current price $2.80

The FW-1 wrench fits HF2 / HF3 / HF4 Series Hydronix Housings

Original price $0.00 - Original price $0.00
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$2.80
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Current price $2.80
Original price $11.00 - Original price $11.00
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$11.00
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Current price $11.00

Hydronix ICF-10Q38 inline coconut shell carbon filters have 3/8" quick-connect connections, and are suitable for drinking water filtration applicat...

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Original price $11.00 - Original price $11.00
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$11.00
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Current price $11.00
Original price $6.00 - Original price $6.00
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$6.00
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Current price $6.00

The FW-3 Wrench can be use to loosen Big Blue or Big Blue style filter housings when changing filters. The spanner wrench has four teeth. This FW-3...

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Original price $6.00 - Original price $6.00
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$6.00
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Current price $6.00
Original price $47.99 - Original price $47.99
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$47.99
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Current price $47.99

iFilters Smart Pack RO-100KIT – 5-Stage Reverse Osmosis Replacement Filter Set (100 GPD Membrane) High-Performance 5-Stage RO Filtration for Superi...

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Original price $47.99 - Original price $47.99
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$47.99
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Current price $47.99
Original price $7.83 - Original price $7.83
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$7.83
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Current price $7.83

ASV Series Automatic Shut-off Valves are a key component in residential Reverse Osmosis systems. ASV Series Automatic Shut-off Valves are available...

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Original price $7.83 - Original price $7.83
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$7.83
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Original price $0.00 - Original price $0.00
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$74.99
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Current price $74.99

Pro+Aqua Complete Reverse Osmosis Yearly Replacement Filter Set. Includes 1 sediment filter (Stage 1), 2 triple capacity carbon block filters (Stag...

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Original price $0.00 - Original price $0.00
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$74.99
$74.99 - $74.99
Current price $74.99
Original price $178.00 - Original price $178.00
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$178.00
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Current price $178.00

Aquatrol PMP-300GPD – 300 GPD Reverse Osmosis Booster Pump High-Performance RO Booster Pump for 300 GPD Systems The Aquatrol PMP-300GPD is a heavy-...

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Original price $178.00 - Original price $178.00
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$178.00
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Current price $178.00
Original price $17.27 - Original price $17.27
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$17.27
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Current price $17.27

Hydronix CB-25-1005 Carbon Block filters are NSF/ANSI Standard 42 certified for material and structural safety. CB-25-1005 filters have a particle ...

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Original price $17.27 - Original price $17.27
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$17.27
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Current price $17.27
Original price $25.98 - Original price $25.98
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$25.98
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Current price $25.98

Hydronix SDC-25-2005 polypropylene sediment filters have a particle retention Size of 5 micron and is used in a residential and commercial water fi...

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Original price $25.98 - Original price $25.98
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$25.98
$25.98 - $25.98
Current price $25.98
Original price $174.99 - Original price $174.99
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$174.99
$174.99 - $174.99
Current price $174.99

Hydron BW-4040 Reverse Osmosis Membrane – High-Performance Commercial RO, 2400 GPD The Hydron BW-4040 Reverse Osmosis Membrane is a high-efficiency...

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Original price $174.99 - Original price $174.99
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$174.99
$174.99 - $174.99
Current price $174.99
Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00

5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For any standard 5 Stage RO system. Sediment, GAC, CTO Carbon Blo...

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Original price $39.00 - Original price $39.00
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$39.00
$39.00 - $39.00
Current price $39.00
Original price $158.95 - Original price $158.95
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$158.95
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Current price $158.95

Designed to filter 99% of contaminants and provide 50 GPD of safe clean water, iFilters has introduced the best RO system in the market at a great ...

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Original price $158.95 - Original price $158.95
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$158.95
$158.95 - $158.95
Current price $158.95
Original price $13.28 - Original price $13.28
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$13.28
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Current price $13.28

The PG25100L is UV resistant, high quality pressure gauge designed with the OEM in mind. From the special synthetic fluid used to fill the gauges t...

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Original price $13.28 - Original price $13.28
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$13.28
$13.28 - $13.28
Current price $13.28
Original price $67.99 - Original price $67.99
Original price
$67.99
$67.99 - $67.99
Current price $67.99

iFilters CBSM-2510 Coconut Shell CTO Carbon Block Drinking Water Filter – 2.5" x 10", 0.5 Micron High-Performance Filtration for Clean, Great-Tasti...

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Original price $67.99 - Original price $67.99
Original price
$67.99
$67.99 - $67.99
Current price $67.99
Original price $37.00 - Original price $37.00
Original price
$37.00
$37.00 - $37.00
Current price $37.00

4 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For most standard 4 Stage RO system. Sediment, CTO Carbon Block, ...

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Original price $37.00 - Original price $37.00
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$37.00
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Current price $37.00
Original price $1.80 - Original price $1.80
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$1.80
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Current price $1.80

The Hydrofit 1/4" Tube x 1/4" NPTF Fixed Elbows are designed for ease of use. Hydrofit Quick Connect Fittings are designed to provide all the typic...

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Original price $1.80 - Original price $1.80
Original price
$1.80
$1.80 - $1.80
Current price $1.80
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