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RFC20-BB Pentek Replacement Filter Cartridge

Quick Overview

Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges

Availability: In stock



The Pentek RFC-20BB water filter cartridge is a Big Blue filter that reduces chlorine taste and odor. The whole house RFC-20BB is a very popular choice, due to its outstanding flow rate. The RFC-20BB is a great way to provide cleaner, better-tasting water to your entire house with this filter. Enjoy minimal maintenance with only 2-3 filter changes each year.
  • Highly effective for chlorine taste and odor reduction
  • Granular Activated Carbon in a Radial Flow Design
  • Limits small black specks (carbon fines) in your water better than most GAC water filters, due to the radial flow design
  • Great for high flow rate applications
  • Genuine OEM Product


Package Qty 1
Used In Brands Ametek, Culligan, Pentek, US Filter
Manufacturer's Id RFC20-BB
UPC 051678247433
Advertised Size (in) 20 x 4-1/2
Primary Filter Media Granular Activated Carbon
Filter Life (gallons) 100,000
Filter Life (liters) 378,541.18
Filter Life (months) 6
Micron Rating (Nominal) 70
Operating Temperature (°F) 40 - 125
Operating Temperature (°C) 4.4 - 51.7
Flow Rate (gpm) 4
Flow Rate (lpm) 15.142


Reduces the following contaminants:
  • The PENTEK-RFC20-BB does not reduce fluoride.


The PENTEK-RFC20-BB is comparable with the following part numbers

155247 175792
155247-43 56027-01
AP817 RFC20-BB
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Good product Review by 3J
Good product. (Posted on 4/23/14)

Pros: Easy Installation, Fast Delivery, Great Results

Would you recommend this product to a friend? Yes

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Great filter for the price Review by eric
This filter provides a decent amount of carbon for the price when trying to filter the chlorine smell/taste for the entire house. The pressure drop across this filter is also relatively minimal when water supply doesn't have a lot of pressure. (Posted on 6/30/13)
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Great whole house filter! Review by JimAZ
We live in the desert and have an underground water tank. A good filter is very imporant to us. (Posted on 6/23/13)
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Best High Flow Rate Filter Review by Forensic Doc
Great flow rate for use in a house with well water that does not have the pressure that municipal water would have (Posted on 4/21/13)
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Grreat tasting water Review by Overkill Bill
Great tasting water. (Posted on 4/9/13)
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Whole house water filter Review by Stegy
Best price! (Posted on 4/1/13)
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Great Vendor Review by Dad
Use in our home water filter. Half the price of buying at local water treatment store. Order arrived in two days. What's not to like! (Posted on 2/24/13)
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Exact filter Review by TaDah
This is a whole house filter. It is used prior to our water softening system. Living in a very hard water part of the country it filters out most of the micro pignemts inbourne in our water. The water is now absent of sulfer and tastes great and improves the quality of our laundry and baths. (Posted on 12/30/12)
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Great Product and a competitive price Review by VA Mom
Filter was the exact one I needed. No issues. Price was competitive and deliver was very quick. Thanks for making it easy! (Posted on 12/9/12)
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