Pentek Filters

Pentek is the largest brand in the filtration industry. With over 50 types of Pentek inline filters in stock, H2O offers a wide line of choices in 4 standard sizes, available for immediate shipment. Pentek inline water filters are available with 1/4" & 3/8" FPT connections and many with 1/4" and/or 3/8" John Guest quick-connect fittings built-in.

All Pentek filters are NSF Certified and are made with the highest grade materials available.

These filters are often used as a Reverse Osmosis (RO) inline post filter. They clip on to the membrane housing and filter the water after the bladder tank, acting as a polishing filter.

Other applications include: appliances, water coolers, coffee makers, and other low flow applications.

Pentek Products

We carry a wide variety of replacement filter cartridges, water filter systems, and filter housings & accessories from Pentek:

Carbon Block Cartridges GAC Cartridges Melt Blown Sediment Cartridges Ultrafiltration Cartridges Quick Change Under Sink Systems Plastic Filter Housings

Pentek Inline Granular Activated Carbon Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline Granular Activated Carbon Filters
Pentek 10" x 2" - 1/4" FNPT, Inline Coconut Shell GAC Cartridge
GS-10RO-B
Pentek 10" x 2" - 1/4" FNPT, Inline Coconut Shell GAC Cartridge
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Pentek 10" x 2" - 3/8" FNPT, Inline Coconut Shell GAC Cartridge
GS-10RO-C
Pentek 10" x 2" - 3/8" FNPT, Inline Coconut Shell GAC Cartridge
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Pentek 10" x 2" - 1/4" John Guest, Inline Coconut Shell GAC Cartridge
GS-10RO-G
Pentek 10" x 2" - 1/4" John Guest, Inline Coconut Shell GAC Cartridge
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Pentek 10" x 2" - 3/8" John Guest, Inline Coconut Shell GAC Cartridge
GS-10RO-H
Pentek 10" x 2" - 3/8" John Guest, Inline Coconut Shell GAC Cartridge
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Pentek Inline Bacteriostatic Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline Bacteriostatic Filters
Pentek 10" x 2" - 1/4" FNPT, Inline Bacteriostatic Cartridge
GS-10EXTRA.5-B
Pentek 10" x 2" - 1/4" FNPT, Inline Bacteriostatic Cartridge
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Pentek 10" x 2" - 3/8" FNPT, Inline Bacteriostatic Cartridge
GS-10EXTRA.5-C
Pentek 10" x 2" - 3/8" FNPT, Inline Bacteriostatic Cartridge
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Pentek Inline Sediment & Rust Particulate Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline Sediment & Rust Particulate Filters
Pentek 10" x 2" - 1/4" John Guest, Inline Sediment & Rust Cartridge
GS-10SED-5-G
Pentek 10" x 2" - 1/4" John Guest, Inline Sediment & Rust Cartridge
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Pentek 14" x 2.5" - 1/4" John Guest, Inline Sediment & Rust Cartridge
GS-215SED-5-G
Pentek 14" x 2.5" - 1/4" John Guest, Inline Sediment & Rust Cartridge
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Pentek Inline Lime, Scale, and Chlorine Taste & Odor Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline Lime, Scale, and Chlorine Taste & Odor Filters
Pentek 10" x 2" - 1/4" FNPT, Inline GAC & Scale Inhibitor
GS-10ALS-B
Pentek 10" x 2" - 1/4" FNPT, Inline GAC & Scale Inhibitor
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Pentek 10" x 2" - 3/8" John Guest, Inline GAC & Scale Inhibitor
GS-10ALS-H
Pentek 10" x 2" - 3/8" John Guest, Inline GAC & Scale Inhibitor
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Pentek Inline Lime & Scale Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline Lime & Scale Filters
Pentek 10" x 2" - 1/4" John Guest, Inline Scale Inhibitor
GS-10pH-G
Pentek 10" x 2" - 1/4" John Guest, Inline Scale Inhibitor
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Pentek Inline Chlorine Taste & Odor Carbon Block Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline Chlorine Taste & Odor Carbon Block Filters
Pentek 10" x 2" - 3/8" John Guest, Inline 1 Micron Chlorine Taste & Odor Cartridge
GS-10CB-1-H
Pentek 10" x 2" - 3/8" John Guest, Inline 1 Micron Chlorine Taste & Odor Cartridge
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Pentek 10" x 2" - 1/4" FNPT, Inline 5 Micron Chlorine Taste & Odor Cartridge
GS-10CB-5-B
Pentek 10" x 2" - 1/4" FNPT, Inline 5 Micron Chlorine Taste & Odor Cartridge
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Pentek Inline TDS Reduction - High Capacity DI Resin Filters

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline TDS Reduction - High Capacity DI Resin Filters
Pentek 11" x 2.5" - 1/4" FNPT, Inline 20 Micron TDS Reduction Cartridge
GS-210DI-B
Pentek 11" x 2.5" - 1/4" FNPT, Inline 20 Micron TDS Reduction Cartridge
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Pentek 14" x 2.5" - 1/4" FNPT, Inline 20 Micron TDS Reduction Cartridge
GS-215DI-B
Pentek 14" x 2.5" - 1/4" FNPT, Inline 20 Micron TDS Reduction Cartridge
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Pentek Inline pH Stabilizers

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  1. Inline Water Filters and Icemaker Filters
  2. Pentek Inline Water Filters
  3. Pentek Inline pH Stabilizers
Pentek pH Stabilizing Calcite/Carbon Inline Water Filter w 1/4" Ports
GS-10CAL-RO-B
Pentek pH Stabilizing Calcite/Carbon Inline Water Filter w 1/4" Ports
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Pentek pH Stabilizing Calcite/Carbon Inline Water Filter w 3/8
GS-10CAL-RO-H
Pentek pH Stabilizing Calcite/Carbon Inline Water Filter w 3/8" John Guest Fittings
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