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Pentek GAC-20BB Drinking Water Filters (20-inch x 4.5-inch)

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Pentek GAC-20BB Drinking Water Filters (20-inch x 4.5-inch)

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$69.99
    • Quantity
    • Unit Price
    • 1 - 2
    • $69.99
    • 3 - 5
    • $67.89
    • 6 +
    • $65.89

Pentek GAC-20BB Filter Advantages

The Pentek GAC-20BB water filter reduces chlorine taste and odor in your drinking water. The Pentek GAC-20BB filter cartridge has a 20 micron postfilter that reduces carbon fines from the drinking water. This filter produces healthier, better-tasting drinking water. The Pentek GAC-20BB filter cartridge is effective at reducing bad taste & odor as well as chlorine taste & odor. The Pentek GAC-20BB water filters are designed to allow maximum contact between the water and carbon, ensuring maximum adsorption. The Pentek GAC-20BB filters effectively provide good general purpose drinking water filtration.

Compatibility and Functionality

The Pentek GAC-20BB water filter is the same as the Everpure EV910842, Everpure DEV910842, Everpure 9108-42, Everpure CGT-204, Bunn C-30, Selecto 101-300, and ShurFlo 15-053-02 Water Filters. The Pentek GAC-20BB filter is NOT recommended for use in a whole house application. This item may not be suitable for providing water to the whole house since there will be a drop in pressure from the carbon media of the filter. If you are looking for a whole house filter, the RFC-20BB filter is a better filter for a whole house application.

Pentek GAC-20BB Filter Design

The Pentek GAC-20BB filter cartridge construction allows water to enter at one end and pass through the entire length of the carbon bed before exiting the other end of the cartridge, an internal expansion pad minimizes channeling or bypass. Before the water exits the cartridge, a 20 micron postfilter helps reduce carbon fines and other suspended particles from the filtered water. The postfilter is permanently fastened to an innovative support basket ensuring that it is firmly secured and eliminating any potential for bypass.

For more information please visit our specifications page and read the Pentek GAC-20BB User Guide

  • Permanent cartridge post filter reduces carbon fines and particle release
  • Provides better tasting water in every glass
  • Has a long filter life of 6 months or 25,000 gallons
  • Compatible with a wide range of filters and housings
  • Genuine OEM Product
Reduces the following contaminants:
  • Bad Taste and Odor
  • Chlorine Taste & Odor
  • The PENTEK-GAC20-BB does not reduce fluoride
  • Sediment
Used In Brands Pentek
Manufacturer's Id GAC20-BB
UPC 051678249437
Advertised Size (in) 20 x 4-1/2
Actual Size (in) 20 inches (length) x 4 1/2 inches (outside diameter)
Actual Size (cm) 50.8 x 11.43
Media Granular Activated Carbon
Post Filter Media Spun Polypropylene
Materials of Construction End Caps: Polystyrene, Outer Casing: Polystyrene, Expansion Pad: Polypropylene, Gaskets: Buna-N (top) and Santoprene (bottom)
Filter Life (gallons) 25,000
Filter Life (liters) 94,635.25
Filter Life (months) 6 months
Micron Rating (Nominal) 20
Operating Temperature (°F) 40 - 125
Operating Temperature (°C) 4.4 - 51.7
Flow Rate (gpm) 4.00
Flow Rate (lpm) 15.14
Color / Finish Blue / White
Certifications NSF/ANSI Standard 42
Includes One Pentek GAC-20BB 20 x 4.5 Inch Drinking Water Filter
Primary Filter Media Granular Activated Carbon
  • Pentek GAC-20BB Water Filter Replacement Information:

  • The Pentek GAC-20BB water filters are easy to install in big blue water filtration systems.
  • The Pentek GAC-20BB filter is NOT recommended for use in a whole house application. If you are looking for a whole house filter, the RFC-20BB filter is a better filter for a whole house application.
  • Replace the Pentek GAC-20BB drinking water filter cartridges every 25,000 gallons of water. The Pentek GAC-20BB filter change interval varies based on your water supply and water usage.


  • Pentek GAC-20BB Water Filter Equivalent Brands:

  • The following Culligan, Ametek, USFilter, and Plymouth Products model holds the Pentek GAC-20BB drinking water filter cartridge:  #20 Big Blue.


  • The Pentek GAC20-BB Drinking Water Filter Cartridge also fits:

    Cuno, AquaPure, Omni, Sears, Fulflo, Teledyne Water Pik, Ace, Master Plumber, Flotec, Honeywell, General Electric, American Plumber, and most other water filter housings for 20" x 4.5" filters.