---
product_id: 4513526
title: "Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10\" x 4.5\""
brand: "pentek"
price: "753 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Pentek"
url: https://www.desertcart.dk/products/4513526-pentair-pentek-gac-bb-big-blue-carbon-water-filter-10
store_origin: DK
region: Denmark
---

# 12,500 gal capacity Fits all 10" Big Blue housings NSF certified safety Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5"

**Brand:** pentek
**Price:** 753 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home’s hydration game with the Big Blue standard in water purity!

## Quick Answers

- **What is this?** Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5" by pentek
- **How much does it cost?** 753 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/4513526-pentair-pentek-gac-bb-big-blue-carbon-water-filter-10)

## Best For

- pentek enthusiasts

## Why This Product

- Trusted pentek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Big Blue Fit:** Seamlessly replaces any 10" x 4.5" carbon filter cartridge in heavy-duty housings—no hassle, just pure refreshment.
- • **Certified Peace of Mind:** NSF International tested and certified, ensuring your water quality meets the highest standards.
- • **Cleaner Water, Cleaner Life:** Post-filter technology reduces carbon fines and suspended particles for crystal-clear water every time.
- • **Pure Taste, Zero Compromise:** Effectively eliminates bad taste & odors for crisp, clean water throughout your home.
- • **Built to Last, Built for You:** Massive 12,500-gallon capacity means fewer replacements and more uninterrupted hydration.

## Overview

The Pentair Pentek GAC-BB Big Blue Carbon Water Filter is a 10" x 4.5" granular activated carbon replacement cartridge designed for whole-house filtration. It fits all 10" Big Blue housings, offers a high 12,500-gallon capacity, and is NSF certified to reduce chlorine, odors, and carbon fines, delivering fresh, great-tasting water with every drop.

## Description

Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5", reduces bad taste & odors to provide good general purpose drinking water. It fits all 10" Pentair Pentek Big Blue or other 10" heavy duty housings and can replace any 10" x 4.5" carbon filter cartridge. It has post-filter that helps reduce carbon fines and other suspended particles from the filtered water. It is NSF International tested and certified for your peace of mind. It has 12,500 gallon capacity and can be replaced every three months or when you notice a drop in water pressure or water quality.

Review: perfect fit - perfect repacement, good price for this filter, it was 2x the price at dealer, no issues.
Review: What a difference - I had a DIY dual filter setup with Pentek 158643 3/8" #10 3G Slim Line Clear Filter Housings for my cold sink water. A while back I downgraded to the cheap generic filters, and noticed a huge downgrade in taste. It was not drinkable water. So to fix it, I added a third Pentek filter housing, and went back to what worked- genuine Pentek filters. The sediment filter I had didn't seem to fit properly, I don't think it sealed at all, so I ditched that completely and used a cheap but working DuPont WFPFC8002 Universal Whole House Carbon Wrap 2-Phase Cartridge as a sediment filter. Second in line I swapped the $6.50 DuPont with the $9.63 Pentek CBC-10 Carbon Block Filter Cartridge, 9-3/4" x 2-7/8", 0.5 Micron, a solid secondary filter w/ a perfect fit. The Pentek feels like it weighs 3x as much as the Dupont, no question it's worth the few extra dollars. The third and final filter was the hardest decision. I have tried both the Pentek ChlorPlus 10 Carbon Block Filter Cartridge, 10" x 2-1/2", 1 Micron, and the Pentek CC-10 Coconut Carbon Drinking Water Filters (9.75" x 2.875"), both of which were fantastic, make a noticeable difference to the taste of the water, and costs about $15-20. Instead, I went with a $12 option, the Pentek GAC-10 Drinking Water Filter (9-3/4" x 2-7/8"), hoping it would deliver similar results, especially considering the town water is fairly clean to begin with, ppm around 48. Would probably go with the CC-10 next time, but I'm very happy with the current results. The Pentek filter and housing combo really restored my drinking water back to amazing. Neighbors knock at my door with 5 gallon jugs because they can taste the difference too.

## Features

- EFFECTIVE REDUCTION OF BAD TASTE & ODORS to provide good general-purpose drinking water
- FITS ALL 10" Pentair Pentek Big Blue or other 10" heavy duty housings and can replace any 10" x 4.5" carbon filter cartridge
- POST-FILTER HELPS REDUCE CARBON FINES and other suspended particles from the filtered water
- NSF INTERNATIONAL tested and certified for your peace of mind
- 12,500 GALLON CAPACITY. Replace every three months or when you notice a drop in water pressure or water quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004VN9W24 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #7,731 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #65 in Replacement Under-Sink Water Filters |
| Brand | Pentek |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,278) |
| Date First Available | November 9, 2004 |
| External Testing Certification | NSF |
| Global Trade Identification Number | 00051678153437 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.09 pounds |
| Item model number | GAC-BB |
| Manufacturer | Pentair Industries |
| Material | Granular Activated Carbon |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | 155153-43 |
| Pattern | Filter |
| Product Benefits | Reduces Chlorine, Removes Odor |
| Product Dimensions | 4.5"D x 4.5"W x 10"H |
| Set Name | Big Blue |
| Size | Pack of 1 |
| Style | 10" x 4.5" |
| UPC | 806294985388 115971043434 809390004274 807032973599 182682383012 132017519012 808112761594 163120784356 851905131616 700999878092 051678153437 798527397412 643749295803 |
| Unit Count | 1.0 Count |

## Product Details

- **External Testing Certification:** NSF
- **Item Weight:** 1.1 Pounds
- **Material:** Granular Activated Carbon
- **Product Benefits:** Reduces Chlorine, Removes Odor
- **Product Dimensions:** 4.5"D x 4.5"W x 10"H

## Images

![Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5" - Image 1](https://m.media-amazon.com/images/I/61RyDgqWsdL.jpg)
![Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5" - Image 2](https://m.media-amazon.com/images/I/81Nl6X4thyL.jpg)
![Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5" - Image 3](https://m.media-amazon.com/images/I/81HxErBaqGL.jpg)
![Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5" - Image 4](https://m.media-amazon.com/images/I/71RO4YSkfHL.jpg)
![Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5" - Image 5](https://m.media-amazon.com/images/I/71qztsq-WKL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Why is this filter not suitable for whole house use?**
A: To give an updated answer on why we don't recommend this for whole house is that although it has removal capacity which would work for high volume situations, the post filter (part that keeps the carbon from flowing out the exit) is small and not made for whole house applications where you might be running multiple taps at one time. It is also not recommended for high sediment applications without a pre-filter for the same reason.  The small post filter could plug more quickly than the capacity of the carbon is exhausted.  The filter in this size that we recommend is the Pentek rfc-bb radial flow carbon filter.  Careful because there are a lot of imposters advertised as 'compatible.'  The current link to Amazon's site for this one is: 
https://www.amazon.com/Pentek-Radial-Flow-Granular-Activated-Cartridge/dp/B001VXW0VC/ref=sr_1_4?crid=3N8Y5XCPP59LO&keywords=pentek%2Brfc-bb%2Bradial%2Bflow%2Bcarbon%2Bfilter&qid=1584447075&sprefix=Pentek%2Brfc-bb%2Caps%2C246&sr=8-4&th=1 
The RFC-BB is designed for whole home use and has a full prefilter and full post filter.  It is rated to remove chlorine taste and odor for more than 50,000 gallons at 2 gpm as compared with the GAC-BB which is rated at 12,500 gallons. It also has a lower pressure drop (0.9 psi at 2 gpm compared to 4 psi at 2 gpm.)  The link for our specification sheet is here: https://www.pentair.com/content/dam/extranet/filtration/north-america/residential/spec-sheets/310075-pentek-rfc-series-spec-sheet.pdf

If you have any other questions about correct filter choice for your application, call our technical support team (USA based) at (800) 279-9404.

**Q: Allthough it says 6 microns as part of the filter, can anyone tell me what the actual rating is? I'm looking for a 0.5 micron filter to remove cysts**
A: A 6 micron filter will not remove 0.5 micron cysts.  You need a sub-0.5 micron filter to remove 0.5 micron cysts.

**Q: Why doesn't this have a Micron rating?**
A: This cartridges uses loose fill granular activated carbon media. The void volume of the loose media is too large to support a micron rating.

**Q: What is the flow rate with 60-70 psi water pressure?**
A: Depends on what your regulator is set at I'm running mine at 60psi it flows great we're on well water it's been over a year now buy a spare because the water pressure will drop with out notice when it's time to change out your filter

## Customer Reviews

### ⭐⭐⭐⭐⭐ perfect fit
*by K***E on November 6, 2025*

perfect repacement, good price for this filter, it was 2x the price at dealer, no issues.

### ⭐⭐⭐⭐⭐ What a difference
*by P***E on March 24, 2019*

I had a DIY dual filter setup with Pentek 158643 3/8" #10 3G Slim Line Clear Filter Housings for my cold sink water. A while back I downgraded to the cheap generic filters, and noticed a huge downgrade in taste. It was not drinkable water. So to fix it, I added a third Pentek filter housing, and went back to what worked- genuine Pentek filters. The sediment filter I had didn't seem to fit properly, I don't think it sealed at all, so I ditched that completely and used a cheap but working DuPont WFPFC8002 Universal Whole House Carbon Wrap 2-Phase Cartridge as a sediment filter. Second in line I swapped the $6.50 DuPont with the $9.63 Pentek CBC-10 Carbon Block Filter Cartridge, 9-3/4" x 2-7/8", 0.5 Micron, a solid secondary filter w/ a perfect fit. The Pentek feels like it weighs 3x as much as the Dupont, no question it's worth the few extra dollars. The third and final filter was the hardest decision. I have tried both the Pentek ChlorPlus 10 Carbon Block Filter Cartridge, 10" x 2-1/2", 1 Micron, and the Pentek CC-10 Coconut Carbon Drinking Water Filters (9.75" x 2.875"), both of which were fantastic, make a noticeable difference to the taste of the water, and costs about $15-20. Instead, I went with a $12 option, the Pentek GAC-10 Drinking Water Filter (9-3/4" x 2-7/8"), hoping it would deliver similar results, especially considering the town water is fairly clean to begin with, ppm around 48. Would probably go with the CC-10 next time, but I'm very happy with the current results. The Pentek filter and housing combo really restored my drinking water back to amazing. Neighbors knock at my door with 5 gallon jugs because they can taste the difference too.

### ⭐⭐⭐⭐⭐ Awesome filter !
*by A***O on August 17, 2025*

There is a reason why they cost a bit more than most. They have a lot of granular carbon. You get what you pay for.. I have yet to install them in my 5 stage watts RO system. which has been resulting in 4ppm. for one year prior to changing all filters... The RO dow tech membrane i only replace every 5 years... my pre sediment is 1 micron ...

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-08*