3rd Aug 2026, 06:45 AM

Pentair Pentek RFC20-BB Big Blue 20 inch x 4.5 inch Carbon Water Filter, Pack of 2 | Radial Flow Granular Activated Carbon Reduces Chlorine Taste and Odor for Over 100,000 Gallons

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$217.46

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Highest: $421.62

Average: $198.55

Lowest: $106.97

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Based our analysis and observation, there is 51.00% chance that the price of Pentair Pentek RFC20-BB Big Blue 20 inch... will increase. Price of product might fluctuate between 35% and 39% of current price.*

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You can check the price history of Pentair Pentek RFC20-BB Big Blue 20 inch x 4.5 inch Carbon Water Filter, Pack of 2 | Radial Flow Granular Activated Carbon Reduces Chlorine Taste and Odor for Over 100,000 Gallons here. This product's current Price in USA is $217.46. The average and highest prices are $198.55 and $421.62 respectively.

Lowest Ever Price	$106.97
20th Nov 2024
Average Price	$198.55
Based on 1035 days price tracking
Highest Price	$421.62
17th Oct 2023

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Pentair Pentek RFC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Radial Flow Carbon Replacement Cartridge with Granular Activated (GAC), 10" x 4.5", 25 Micron, Pack of 8

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Offer Price: $217.46

Pentair Pentek RFC20-BB Big Blue 20" x 4.5" Carbon Water Filter, Pack of 2 | Radial Flow Granular Activated Carbon Reduces Chlorine Taste and Odor for Over 100,000 Gallons

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Current Price in USA

Price	$217.46
MRP	$217.46
Savings	$0.00
Discount	0%

Recent Price Drops on Pentair Pentek RFC20-BB Big Blue 20 inch x 4.5 inch Carbon Water Filter, Pack of 2 | Radial Flow Granular Activated Carbon Reduces Chlorine Taste and Odor for Over 100,000 Gallons

Price Drop 22nd Jun 2026

$185.00 → $167.98

9.2% drop

Price Drop 15th Jun 2026

$206.46 → $185.00

10.39% drop

Price Drop 18th May 2026

$257.56 → $207.44

19.46% drop

Price Drop 23rd Apr 2026

$202.38 → $180.00

11.06% drop

Price Drop 21st Mar 2026

$218.14 → $202.98

6.95% drop

Price Drop 4th Jan 2026

$197.56 → $178.68

9.56% drop

Product Information

Details

Product Name	Pentair Pentek RFC20-BB Big Blue 20 inch x 4.5 inch Carbon Water Filter, Pack of 2 \| Radial Flow Granular Activated Carbon Reduces Chlorine Taste and Odor for Over 100,000 Gallons
Store Product Code	B0CJHQ9F24
Store Name	amazon.com
Rating	9.4 / 10
Category	Replacement Under-Sink Water Filters
Product Manufacturer	Pentair
Model Number	RFC-20BB
Model Number	RFC-20BB
Color	White
Size	Pack of 2
Dimensions	4.5"D x 4.5"W x 20"H

Features

REDUCES CHLORINE TASTE AND ODOR - Granular activated carbon reduces chlorine taste and odor for cleaner, better-tasting water at every tap, treating your whole house from a single point of entry.
RADIAL FLOW FOR LOW PRESSURE DROP - The radial flow design delivers just 0.90 psi drop at 4 gpm and significantly reduces the carbon fines commonly released by standard granular carbon cartridges.
DURABLE GAC-IN-SHELL BUILD - A bed of granular activated carbon is sealed between a 70-micron porous polyethylene outer shell and a spun polypropylene core, with polypropylene endcaps and Buna-N gaskets.
NSF CERTIFIED MATERIALS, BIG BLUE FIT - Tested and Certified by NSF International to NSF/ANSI Standard 42 for material requirements; this 20" x 4.5" cartridge fits standard 20 inch Big Blue whole house housings.
OVER 100,000 GALLON CAPACITY - Reduces chlorine taste and odor for more than 100,000 gallons at 4 gpm; rated 40 to 125 degrees F. Replace when you notice returning taste or odor, or a drop in flow.

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Rating and Reviews

9.4 Based on 1061 reviews

Pentair Pentek RFC20-BB Big Blue 20 inch has 9.4 rating out of 10. This average rating is consist of 1061 individual ratings. You can rate this product at product review page.