---
product_id: 513145787
title: "Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20\" x 4.5\", Pack of 4"
brand: "pentek"
price: "KD 270.45"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/513145787-pentair-pentek-gac-20bb-big-blue-carbon-water-filter-20
store_origin: KW
region: Kuwait
---

# Minimal water pressure drop with radial flow design 20-inch heavy-duty carbon cartridge NSF/ANSI 42 certified for trusted water purity Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5", Pack of 4

**Brand:** pentek
**Price:** KD 270.45
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with clean, crisp water that keeps you ahead of the curve!

## Quick Answers

- **What is this?** Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5", Pack of 4 by pentek
- **How much does it cost?** KD 270.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/513145787-pentair-pentek-gac-20bb-big-blue-carbon-water-filter-20)

## 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

- • **Big Blue, Big Impact:** Fits all 20" Pentair Pentek Big Blue housings—upgrade your filtration system effortlessly.
- • **Flow Without the Wait:** Innovative radial flow design ensures strong water pressure with no annoying carbon fines.
- • **Certified Peace of Mind:** NSF/ANSI Standard 42 certification guarantees reliable contaminant reduction you can trust.
- • **Long-Lasting Performance:** Up to 6 months or 25,000 gallons of premium filtration—less hassle, more hydration.
- • **Pure Taste, Zero Compromise:** Effectively eliminates chlorine taste & odors for crisp, refreshing water every time.

## Overview

The Pentair Pentek GAC-20BB is a 20-inch heavy-duty granular activated carbon water filter cartridge designed to reduce chlorine taste and odors while maintaining strong water pressure. Certified to NSF/ANSI Standard 42, it fits all Pentair Pentek Big Blue housings and offers up to 6 months or 25,000 gallons of reliable filtration, making it an essential upgrade for professionals seeking premium water quality and convenience.

## Description

Pentair Pentek GAC Series Cartridges effectively reduce unwanted taste and odors, including chlorine taste & odor from your drinking water. Designed to allow maximum contact between the water and carbon ensuring optimal adsorption. The construction of the cartridge 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 post-filter helps reduce carbon fines and other suspended particles from the filtered water. The post-filter is permanently fastened eliminating any potential for bypass. For best results, especially in high flow/high sediment applications, we suggest you team up a GAC post-filter with a Fibredyne pre-filter (Pentair Pentek FloPlus-20BB, EP-20BB, or C1-20BB) or an Extruded Carbon Block pre-filter (Pentair Pentek RFC-20BB or NCP-20BB).

## Features

- ENJOY CLEANER, BETTER TASTING DRINKING WATER with effective unwanted taste & odor reduction, including chlorine taste & odor.
- EXPERIENCE WATER WITHOUT THE WAIT - minimal drop in water pressure AND reduced carbon fines ("specs" commonly associated with GAC styled filters) through the unique radial flow design.
- TESTED AND CERTIFIED BY NSF INTERNATIONAL to NSF/ANSI Standard 42 for your peace of mind.
- DESIGNED FOR 20" PENTAIR PENTEK BIG BLUE FILTER HOUSINGS and can replace any 20" x 4.5" carbon filter. For best results, especially in high flow/high sediment applications, we suggest you team up a GAC post-filter with a Fibredyne pre-filter (Pentair Pentek FloPlus-20BB, EP-20BB, or C1-20BB). Extruded Carbon Block is another great pre-filter choice (Pentair Pentek RFC-20BB or NCP-20BB filter).
- LONG FILTER LIFE OF 6 MONTHS – 25,000-gallon capacity translates to replacing the filter every 6 months (or when you notice a drop in water pressure/quality). You can also stress less and live more when you purchase a convenient case pack! Your future self will thank you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Pentek |
| Model Number | 155249-43 |
| Color | Blue |
| Product Dimensions | 50.8 x 11.43 x 11.43 cm; 9.07 kg |
| Material | Activated Carbon,Carbon |
| Item Weight | 9.07 Kilograms |

## Product Details

- **Material:** Activated Carbon,Carbon
- **Product dimensions:** 11.4D x 11.4W x 50.8H centimeters
- **Item weight:** 9.07 kg
- **External testing certification:** NSF
- **Product benefits:** Reduces Chlorine

## Images

![Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5", Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71OBYDaBmAL.jpg)

## Available Options

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

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-18*