--- 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: "3343.79 DT" currency: TND in_stock: true category: "Pentek" url: https://www.desertcart.tn/products/513145787-pentair-pentek-gac-20bb-big-blue-carbon-water-filter-20 store_origin: TN region: Tunisia --- # Minimal water pressure drop via radial flow design 20-inch heavy-duty carbon cartridge NSF/ANSI Standard 42 certified for safety 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:** 3343.79 DT **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with crystal-clear confidence! ## 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?** 3343.79 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Flow Without the Wait:** Innovative radial flow design ensures strong water pressure with minimal carbon fines—no more waiting or cloudy water. - • **Certified Peace of Mind:** NSF/ANSI Standard 42 certification guarantees trusted filtration performance you can rely on. - • **Fits Your Big Blue System:** Specifically engineered for 20" Pentair Pentek Big Blue housings—easy swap, seamless upgrade. - • **Pure Taste, Zero Compromise:** Effectively eliminates chlorine taste & odor for crisp, refreshing water every time. - • **Long-Lasting Hydration Partner:** Up to 6 months or 25,000 gallons of premium filtration—buy in bulk and stress less, live more. ## Overview The Pentair Pentek GAC-20BB is a 20-inch heavy-duty granular activated carbon water filter cartridge designed to reduce chlorine taste and odor while maintaining strong water pressure. Certified to NSF/ANSI Standard 42, it fits Pentair Pentek Big Blue filter housings and offers up to 6 months or 25,000 gallons of reliable filtration. Its radial flow design minimizes carbon fines, ensuring cleaner, better-tasting water with every pour. ## 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 | |---------------|-------| | ASIN | B0BMFGX9JR | | Brand Name | Pentek | | Customer Reviews | 4.5 4.5 out of 5 stars (29) | | External Testing Certification | NSF | | Global Trade Identification Number | 30051678249438 | | Item Dimensions D x W x H | 11.4D x 11.4W x 50.8H centimeters | | Item Weight | 9.07 kg | | Manufacturer | Pentair | | Manufacturer Part Number | 155249-43 | | Material Type | Activated Carbon,Carbon | | Model Number | GAC-20BB | | Number of Items | 4 | | Product Benefits | Reduces Chlorine | | Set Name | 4 | | Unit Count | 4 Count | ## Product Details - **External testing certification:** NSF - **Item weight:** 20 Pounds - **Material:** Activated Carbon,Carbon - **Product benefits:** Reduces Chlorine - **Product dimensions:** 11.4D x 11.4W x 50.8H centimeters ## 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. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/513145787-pentair-pentek-gac-20bb-big-blue-carbon-water-filter-20](https://www.desertcart.tn/products/513145787-pentair-pentek-gac-20bb-big-blue-carbon-water-filter-20) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-13*