--- product_id: 361720778 title: "Pentek RFC20-BB Carbon Filter Cartridge, 20\" x 4-1/2\"" brand: "pentek" price: "AR$776039" currency: ARS in_stock: true reviews_count: 5 category: "Pentek" url: https://www.desertcart.com.ar/products/361720778-pentek-rfc20-bb-carbon-filter-cartridge-20-x-4-1 store_origin: AR region: Argentina --- # Fits all 20" Big Blue housings 100,000+ gallons filtered 0.90 psi low pressure drop Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" **Brand:** pentek **Price:** AR$776039 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your home’s water game—taste the difference, feel the flow! ## Quick Answers - **What is this?** Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" by pentek - **How much does it cost?** AR$776039 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/361720778-pentek-rfc20-bb-carbon-filter-cartridge-20-x-4-1) ## 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 - • **Whole-Home Freshness:** Eliminates chlorine taste & odor for fresher water at every tap - • **Radial Flow Efficiency:** Innovative design ensures smooth water flow with minimal pressure loss - • **Universal Compatibility:** Seamlessly fits all 20" Big Blue and heavy-duty housings for easy upgrades - • **Long-Lasting Performance:** Filters over 100,000 gallons—up to a year of reliable service - • **Certified Quality Assurance:** NSF/ANSI 42 certified for trusted, safe filtration you can count on ## Overview The Pentek RFC20-BB is a 20" radial flow carbon filter cartridge designed for whole-house water filtration. Featuring a deep granular activated carbon bed, it reduces chlorine taste and odor across all taps with a low pressure drop of 0.90 psi at 4 gpm. Certified to NSF/ANSI 42 standards, it fits all 20" Big Blue housings and delivers over 100,000 gallons of high-quality filtration—providing up to a year of fresher, cleaner water for your entire home. ## Description The Pentair Pentek RFC-20BB is a 20-inch radial flow carbon cartridge for whole-house, point-of-entry water filtration. A deep bed of granular activated carbon (GAC) reduces chlorine taste and odor across every tap for fresher-tasting water.Its radial flow design lets water pass through the carbon bed with a low pressure drop of just 0.90 psi at 4 gpm, and it reduces the carbon fines that standard GAC cartridges tend to release. Rated for more than 100,000 gallons of chlorine taste and odor reduction at 4 gpm, it offers up to about a year of high-flow service between changes.Built with a porous polyethylene outer shell, a GAC bed and a polypropylene core, the RFC-20BB measures 20" x 4.5" and fits all 20-inch Big Blue and other heavy-duty housings, replacing any 20" x 4.5" carbon cartridge. It is rated to 125°F and is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements. Replace when taste or odor returns or flow drops. Review: Water filter - Great filter Review: Best value of any place I've found., - Carbon helps to purify aft er the first filter takes the chunks out. LOL ## Features - CLEANER, BETTER-TASTING WATER - Reduces chlorine taste and odor throughout your entire home so every tap delivers fresher-tasting water, using a deep bed of granular activated carbon (GAC). - RADIAL FLOW CARBON DESIGN - Water flows radially through the carbon bed for a low pressure drop of just 0.90 psi at 4 gpm, while the design reduces the carbon fines commonly released by standard GAC cartridges. - HIGH-CAPACITY WHOLE-HOUSE FILTRATION - Rated for more than 100,000 gallons of chlorine taste and odor reduction at 4 gpm, delivering up to about a year of whole-house service between changes. - FITS ALL 20-INCH BIG BLUE HOUSINGS - Measures 20" x 4.5" and drops into any 20" Big Blue or other heavy-duty housing, replacing any 20" x 4.5" carbon cartridge. Ideal for point-of-entry and high-flow systems. - NSF/ANSI 42 CERTIFIED BUILD - Tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements, with a porous polyethylene outer shell and polypropylene core rated to 125°F. Replace when taste or flow declines. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003SRQG0U | | Brand | pentek | | Country of Origin | USA | | Customer Reviews | 4.6 out of 5 stars 726 Reviews | | EU Spare Part Availability Duration | 1 Years | | Enclosure Material | Polyethylene (PE), Polypropylene (PP) | | External Testing Certification | NSF, ANSI | | Global Trade Identification Number | 00051678247433 | | Included Components | None | | Item Dimensions D x W x H | 11.4D x 11.4W x 50.8H Centimeters | | Item Highlight | Granular Activated Carbon Reduces Chlorine Taste and Odor Whole-House; 20" x 4.5", 100,000-Gallon Capacity | | Item Type Name | 20-Inch, Whole House Heavy Duty Radial Flow Carbon Replacement Cartridge with Granular Activated Carbon (GAC) Filter, 20" x 4.5", 25 Micron | | Item Weight | 2.5 Pounds | | Manufacturer | Pentair Industries | | Manufacturer Part Number | 155247-43 | | Material | Polyethylene (PE), Polypropylene (PP) | | Model number | RFC20-BB | | Number of Items | 1 | | Number of Packs | 1 | | Product Benefits | Reduces Chlorine | | Product Dimensions | 11.4D x 11.4W x 50.8H Centimeters | | UPC | 051678247433 | | Unit Count | 1.0 Count | ## Product Details - **Material:** Polyethylene (PE), Polypropylene (PP) - **Product Dimensions:** 11.4D x 11.4W x 50.8H Centimeters - **Item Weight:** 1.13 kg - **External Testing Certification:** NSF, ANSI - **Product Benefits:** Reduces Chlorine ## Images ![Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" - Image 1](https://m.media-amazon.com/images/I/61Da7aesdRL.jpg) ![Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" - Image 2](https://m.media-amazon.com/images/I/81Nl6X4thyL.jpg) ![Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" - Image 3](https://m.media-amazon.com/images/I/71U6dVnaq4L.jpg) ![Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" - Image 4](https://m.media-amazon.com/images/I/71rlljg1oUS.jpg) ![Pentek RFC20-BB Carbon Filter Cartridge, 20" x 4-1/2" - Image 5](https://m.media-amazon.com/images/I/71ZZBSPbwML.jpg) ## Questions & Answers **Q: In what way is this filter diffrrent (better?) than the gac-20bb? for whole house chlorine removal before a water softener.** A: These are both carbon filters, and will fit the same housings, the main difference is how they are constructed, which affects the performance. RFC20-BB filters offer a radial flow design which greatly reduces the pressure drop (RFC20-BB is rated at 0.9 psi pressure drop at 4 gpm, while the GAC-20BB you are comparing to is rated at 10 psi pressure drop @ 4gpm). The RFC20-BB filters also have a higher filtration capacity. RFC20-BB are rated at >100,000 gallons of chlorine taste and odor reduction at 4gpm, while the GAC-20BB are rated at 25,000 gallons. **Q: Would this work with other 20 x 4.5 filter systems, like a replacement for an american plumber wrc25hd20?** A: RandyYes this filter will work in other systems that take 4"x 20" filter **Q: This filter is 1/2 " longer then the old one will it still work?** A: This filter is designed to fit into the 10 inch Big Blue filter housings which is similar in size to most other 10 inch heavy duty filter housings. We have not made changes to the length of these cartridges, so if you had this model previously, it should still fit correctly. Not knowing what specific housing you have, I cannot for certain tell if this cartridge will fit. If you would like further details, please reach out to our technical support team (USA based) at 800-279-9404. **Q: Is this good enough for a spotless car wash filter?** A: The RFC can be used as pretreatment for equipment that actually provides spotless rinse. This filter in itself does not provide spotless rinse. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Water filter *by D***. on 27 August 2026* Great filter ### ⭐⭐⭐⭐⭐ Best value of any place I've found., *by A***R on 25 October 2025* Carbon helps to purify aft er the first filter takes the chunks out. LOL ### ⭐⭐⭐⭐⭐ Excellent *by A***R on 16 November 2018* This is my second purchase and they fit perfectly into the acrylic cylinders/holders. Will purchase again. Thank you ## Frequently Bought Together - Pentair Pentek RFC-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Radial Flow Carbon Replacement Cartridge with Granular Activated Carbon (GAC) Filter, 20" x 4.5", 25 Micron - Pentair Pentek DGD-5005-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 5 Micron, Pack of 1, White - Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) --- ## 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.com.ar/products/361720778-pentek-rfc20-bb-carbon-filter-cartridge-20-x-4-1](https://www.desertcart.com.ar/products/361720778-pentek-rfc20-bb-carbon-filter-cartridge-20-x-4-1) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-10-03*