Franklin 2.5" x 10" Carbon Block Water Filter Cartridge – Chlorine, Taste & Odor Reduction (FWCB Series)

Franklin FWCB 2.5" x 10" Carbon Block Filter Cartridges

The Franklin FWCB 2.5" x 10" Carbon Block Filter Cartridges are engineered to deliver high-performance chlorine, taste, and odor reduction in compact filtration systems. Manufactured using 100% coconut shell activated carbon, these cartridges provide excellent chemical adsorption, long service life, and minimal carbon fines—making them ideal for residential, commercial, industrial, and food service applications.

Available in both 5 micron (FWCB1005) and 0.5 micron (FWCB10P5) ratings, the 2.5" x 10" FWCB cartridges offer reliable contaminant reduction with low initial pressure drop, supporting consistent flow in point-of-use (POU) systems, under-sink filters, and reverse osmosis pre-filtration.

Certified under NSF 42 and NSF 61, these cartridges meet strict standards for chlorine reduction and potable water safety. Their robust construction—including polypropylene end caps, polypropylene wrap and netting, and natural rubber gaskets—ensures durability under operating pressures up to 150 psi and temperatures up to 120°F (50°C).

Key Features (2.5" x 10")

• High-purity coconut shell carbon media for superior chlorine, taste, and odor reduction

• Available Micron Ratings:

  • 5 Micron (FWCB1005) – >17,000 gallons @ 1 GPM

  • 0.5 Micron (FWCB10P5) – >20,000 gallons @ 1 GPM

• Low Initial Pressure Drop:

  • 5 Micron: 2 psid @ 1 GPM

  • 0.5 Micron: 3 psid @ 1 GPM

• NSF 42 & NSF 61 Certified for potable water

• Operating Limits:

  • Temperature: 40–120°F (4–50°C)

  • Maximum Pressure: 150 psi (10 bar)

• Designed for POU systems, RO pre-filters, and residential/commercial filtration

Applications

• Drinking water systems (POU)

• Pre- and post-filtration for RO systems

• Food & beverage processing

• Light industrial and commercial water systems

• Under-sink and countertop filter housings

Frequently Asked Questions (FAQs)

What models are available in the 2.5" x 10" size?

• FWCB1005 – 2.5" x 10", 5 micron

• FWCB10P5 – 2.5" x 10", 0.5 micron

What is the difference between the 5-micron and 0.5-micron versions?

• 5 Micron: Greater sediment capacity, lower pressure drop, economical, suitable for general taste/odor/chlorine filtration.

• 0.5 Micron: Finer particulate removal, enhanced chlorine reduction, better polishing filtration.

How much water can these filters treat?

• 5 Micron: >17,000 gallons @ 1 GPM

• 0.5 Micron: >20,000 gallons @ 1 GPM

Are these filters safe for drinking water?

Yes. They are certified to NSF 42 (chlorine, taste, odor) and NSF 61 (material safety).

Do these filters remove bacteria?

No. Carbon block filters are not microbiological purifiers. Franklin recommends multiple disinfection barriers where raw water may contain pathogens.

What housings do these cartridges fit?

They fit standard 2.5" x 10" filter housings, including:

• Under-sink housings

• RO system housings

• Countertop filter housings

What are the cartridges made from?

• Carbon media: 100% coconut shell

• End caps & netting: Polypropylene

• Gasket: Natural rubber

What is the maximum pressure and temperature rating?

• Max pressure: 150 psi

• Max temperature: 120°F (50°C)

Can these be used as RO pre-filters?

Yes. They are ideal for reducing chlorine before the membrane and polishing water afterward.