Franklin 2.5" x 20" Carbon Block Water Filter Cartridge (FWBC Series) – High-Capacity Chlorine, Taste & Odor Reduction (0.5 or 5 Micron)

High-Capacity 2.5" x 20" Carbon Block Filter Cartridges for Chlorine, Taste & Odor Reduction

The Franklin FWCB 2.5" x 20" Carbon Block Filter Cartridges deliver exceptional chlorine reduction, improved taste and odor, and dependable particulate filtration for residential, commercial, and industrial water treatment systems. Manufactured using high-purity coconut shell activated carbon, these cartridges provide an outstanding balance of performance, service life, and cost efficiency.

Sized for standard 2.5" x 20" housings, these cartridges are ideal for POE/POU systems, food & beverage processing, pre-filtration for RO systems, and general potable water improvement. With low pressure drop and long-life chlorine reduction capacity, the FWCB series is widely trusted for both municipal and well-water applications.

Available in 5 micron (FWCB2005) and 0.5 micron (FWCB20P5) options to match your system’s sediment and polishing requirements.

Performance Data (2.5" x 20")

• 5 Micron (FWCB2005) – >37,000 gallons at 2 GPM, 2 psi initial ΔP

• 0.5 Micron (FWCB20P5) – >45,000 gallons at 2 GPM, 3 psi initial ΔP

• Max temperature: 50°C / 120°F

• Materials: Coconut shell carbon, polypropylene construction, natural rubber gasket

Features of the Franklin 2.5" x 20" Carbon Block Filter Cartridges

• High-purity coconut shell activated carbon for superior adsorption

• Excellent chlorine, taste, and odor reduction performance

• Available in 0.5-micron or 5-micron filtration grades

• Long service life with high sediment-holding capacity

• Low pressure drop for efficient flow performance

• Compatible with standard 20" slimline filter housings

• Ideal for potable & process water, food & beverage, and RO pre-filtration

• Constructed from NSF-compliant materials (NSF 42/61 for applicable models)

Frequently Asked Questions – 2.5" x 20" FWCB Carbon Block Cartridges

What micron ratings are available for the 2.5" x 20" size?

Two variants are available:

• 5 Micron – FWCB2005

• 0.5 Micron – FWCB20P5
  

How much chlorine reduction can these filters provide?

• 5 Micron: >37,000 gallons at 2 GPM

• 0.5 Micron: >45,000 gallons at 2 GPM
  

What applications are these cartridges suitable for?

According to the PDF, they are used for:

• Potable & process water

• Food & beverage

• Water purification systems

• Reverse osmosis pre/post-filtration

What are the maximum temperature and pressure limits?

• Max Temperature: 50°C / 120°F

• Max Operating Pressure: 150 psi (10 bar)

• Recommended ΔP for replacement: 22 psi (1.5 bar)
  

Are these filters suitable for residential or commercial systems?

Yes—these cartridges are appropriate for residential, commercial, and industrial systems requiring chlorine reduction and sediment control.

Are the filters safe for drinking water?

Yes. These models carry NSF 42 and/or NSF 61 certification depending on the specific micron rating.

What materials are used in construction?

• Filter Media: 100% coconut shell carbon

• Caps / Wraps / Netting: Polypropylene

• Gasket: Natural rubber

Will these filters fit standard 20" housings?

Yes. They are designed for standard 2.5" x 20" slimline housings commonly used across the water treatment industry.