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Pentek GAC-BB Drinking Water Filters (9.75-inch x 4.5-inch)

Price $29.99 List Price Price $38.99 Save 23%
Availability: BackOrder
Fits most stand housings built for 10-inch x 4.5-inch filter cartridges
Choose a quantity
  • 1 Filter $29.99  
  • 3 Filters Price $28.22 each
  • 6 Filters Price $26.99 each
  • High quality, great value replacement filter
  • Provides better tasting water in every glass
  • Drop-in cartridge makes filter change fast and easy
  • Compatible with a wide range of filters and housings
See more product details

Pentek GAC-BB Filter Advantages

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

Pentek GAC-BB Filter Design

The Pentek GAC-BB 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, while 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. This product is not recommended for whole house applications. Order today!

Standardized Filter Sizing

The Pentek GAC-BB drinking water filter is perfectly sized for filter housings requiring a 10 x 4.5 inch filter. Due to this standardized sizing this filter is compatible with many brand filter housings and is easy to exchange with existing filters. For more specific compatible information please check out the comparables tab above.

NOTE:The Pentek GAC-BB filter is NOT recommended for use in a whole house application. If you are looking for a whole house filter, the RFC-BB filter is a better filter for a whole house application. With a flow rate of up to 2 gallons per minute this filter works as a fine option for undersink and point of use applications but can not support the water demands of a household.

For more information please see the related tabs and read the Pentek GAC-BB User Guide

Package Qty 1
Used In Brands Ace, American Plumber, Aqua-Pure, Cuno, Flotec, Fulflo, GE, Honeywell, Master Plumber, Omni, Pentek, Sears, Teledyne, Waterpik
Manufacturer's Id GAC-BB
UPC 051678153437
Advertised Size (in) 10 x 4-1/2
Actual Size (in) 9-3/4 inches (Length) x 4-1/2 inches (Outside Diameter)
Actual Size (cm) 24.765 x 11.43
Primary Filter 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) 12,500
Filter Life (liters) 47,317.63
Filter Life (months) 12 months
Operating Temperature (°F) 40 - 125
Operating Temperature (°C) 4.4 - 51.7
Flow Rate (gpm) 2
Flow Rate (lpm) 7.571
Color Blue
Includes One 9.75 x 4.5 Inch Pentek GAC-BB Drinking Water Filter
Primary Filter Media Granular Activated Carbon

Reduced Contaminants

The PENTEK-GAC-BB reduces the following contaminants:

  • Bad Taste and Odor
  • Chlorine Taste & Odor 75.00%
  • Sediment

The PENTEK-GAC-BB is comparable with the following part numbers


User Guide


  1. Turn off water supply. Press red pressure-relief button (if present).
  2. Unscrew housing. Remove large o-ring, wipe clean and set aside.
  3. Discard used filter cartridge. Wash housing with dish soap and warm water using a nonabrasive sponge or cloth. Rinse thoroughly.
  4. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly.
  5. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove.
  6. NOTE: This step is important to ensure a proper housing seal. Make certain the o-ring is seated level in the groove.
  7. Insert new filter cartridge.
  8. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge.
  9. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation.

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