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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 $229.95 - Original price $229.95
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$229.95
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Current price $229.95

Original price $229.95 - Original price $229.95
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$229.95
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Current price $229.95
Original price $39.07 - Original price $39.07
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$39.07
$39.07 - $39.07
Current price $39.07

3 Stage Aquarium Reverse Osmosis RO Replacement Water Filter Set with 100 GPD Membrane. For any standard compact Aquarium RO system with 1/4" tubin...

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Original price $39.07 - Original price $39.07
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$39.07
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Current price $39.07
Original price $249.99 - Original price $249.99
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$249.99
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Current price $249.99

Designed to filter 99% of contaminants and provide 100 GPD of safe clean water, iFilters has introduced the best RO system in the market at a great...

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Original price $249.99 - Original price $249.99
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$249.99
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Current price $249.99
Original price $24.49 - Original price $24.49
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$24.49
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Current price $24.49

OmniFilter ROR2000 RO Pre-Filter Cartridges reduce rust, sediment, and the taste and odor of Chlorine, leaving you with water that is as healthy as...

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Original price $24.49 - Original price $24.49
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$24.49
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Current price $24.49
Original price $17.58 - Original price $17.58
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$17.58
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Current price $17.58

The Omnifilter ROR2050 Replacement Filter Pack comes with an RS14 style inline filter cartridge. This Omnifilter replacement reverse osmosis kit in...

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Original price $17.58 - Original price $17.58
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$17.58
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Current price $17.58
Original price $149.95 - Original price $149.95
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$149.95
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Current price $149.95

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 $149.95 - Original price $149.95
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$149.95
$149.95 - $149.95
Current price $149.95
Original price $9.99 - Original price $9.99
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$9.99
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Current price $9.99

Original price $9.99 - Original price $9.99
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$9.99
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Current price $9.99
Original price $18.99 - Original price $18.99
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$18.99
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Current price $18.99

Inline Style Flow Restrictor 550ml/Min, 50gpd, 1/4" QC

Original price $18.99 - Original price $18.99
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$18.99
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Current price $18.99
Original price $18.99 - Original price $18.99
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$18.99
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Hydronix Inline Style Flow Restrictor 420ml/Min, 36gpd, 1/4" FNPT

Original price $18.99 - Original price $18.99
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Current price $18.99
Original price $322.99
Original price $322.99 - Original price $322.99
Original price $322.99
Current price $211.35
$211.35 - $211.35
Current price $211.35

The HYDRONIX SPV-4061 is a high-performance 4-inch x 61-inch stainless steel pressure vessel designed for reverse osmosis (RO) systems. Built to wi...

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Original price $322.99
Original price $322.99 - Original price $322.99
Original price $322.99
Current price $211.35
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Current price $211.35
Sale Sale
Original price $1.60 - Original price $1.60
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$1.60
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Current price $1.60

HYDROFIT 1/4" Tube x 1/4" Tube x 1/4" Tube Two-Way Splitter (HDF-TW04)Efficient Tube-to-Tube Water Line Splitter The HYDROFIT HDF-TW04 is a 1/4" t...

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Original price $1.60 - Original price $1.60
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Original price $1.30 - Original price $1.30
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Original price $1.10 - Original price $1.10
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Hydrofit, 3/8" Stem x 1/4" Tube Adapter Hydrofit, 3/8" Stem x 1/4" Tube Adapter

Original price $1.10 - Original price $1.10
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$1.10
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Current price $1.10
Original price $4.22 - Original price $4.22
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$4.22
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Current price $4.22

Hydrofit HDF-ECV0402 1/4” to 1/8” MNPT Elbow Check Valve – NSF 61 Certified, Quick Connect Fitting for Water & Food Applications HYDROFIT™ – ...

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Original price $4.22 - Original price $4.22
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$4.22
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Original price $299.94 - Original price $299.94
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$299.94
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Current price $299.94

HydroScientific HF4520SS-10 – Stainless Steel High-Flow Filter Housing The HF4510SS-10 is a durable and reliable stainless steel filter housing des...

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Original price $299.94 - Original price $299.94
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$299.94
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Current price $299.94
Original price $14.40 - Original price $14.40
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$14.40
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Current price $14.40

Replacement drain line for water softeners and filtration systems. Compatible with most systems using standard 1/2" Quick Connect (push-in) port.

Original price $14.40 - Original price $14.40
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Original price $89.95 - Original price $89.95
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$89.95
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Current price $89.95

Hydronix PMP-43622-01 Power Supply Transformer for PMP-300GPD Booster Pump The Hydronix PMP-43622-01 is a high-quality power supply transformer des...

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Original price $89.95 - Original price $89.95
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$89.95
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Current price $89.95
Original price $139.00 - Original price $139.00
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$139.00
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Current price $139.00

Hydronix BSV-34110V Brass Solenoid Valve – Normally Closed, 110V 50/60Hz, 3/4" FNPT The Hydronix BSV-34110V is a high-performance brass solenoid va...

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Original price $139.00 - Original price $139.00
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$139.00
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Current price $139.00
Original price $1.60 - Original price $1.60
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$1.60
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Current price $1.60

The Hydrofit NSF 3/8" Tube x 3/8" NPT Male Connector Adapter is NSF-approved and are designed for ease of use. Hydrofit Quick Connect Fittings are ...

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Original price $1.60 - Original price $1.60
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$1.60
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Current price $1.60
Original price $299.95 - Original price $299.95
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$299.95
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Current price $299.95

The T1-304-10-222 is a durable 304 stainless steel temperature control valve designed to regulate the flow of liquids. With a flow capacity of 7 GP...

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Original price $299.95 - Original price $299.95
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$299.95
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Current price $299.95
Original price $299.95 - Original price $299.95
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$299.95
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Current price $299.95

The T1-304-34-222 is a versatile and reliable filter designed for diverse filtration needs. Crafted from durable 304 stainless steel, it ensures lo...

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Original price $299.95 - Original price $299.95
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$299.95
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Current price $299.95
Original price $152.99 - Original price $152.99
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$152.99
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Current price $152.99

The T1-304-10 is a dependable filter suitable for various filtration applications. Constructed from durable 304 stainless steel, it offers corrosio...

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Original price $152.99 - Original price $152.99
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$152.99
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Current price $152.99
Original price $149.99 - Original price $149.99
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$149.99
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Current price $149.99

The T1-304-34 is a versatile filter designed for a wide range of applications. Crafted from robust 304 stainless steel, it ensures durability and c...

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Original price $149.99 - Original price $149.99
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$149.99
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Current price $149.99
Original price $81.00 - Original price $81.00
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$81.00
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Current price $81.00

Hydronix PG40100B - 0-100 PSI Stainless Steel Water Pressure Gauge (4" Dial, 1/2" NPT Port) High-accuracy, UV-Resistant Pressure Gauge for Water Fi...

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Original price $81.00 - Original price $81.00
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$81.00
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Current price $81.00
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