--- product_id: 253575592 title: "Pentek - 155247-43 RFC-20BB Carbon Filter (20\" x 4.5\"), 25 Micron" brand: "pentek" price: "NT$11359" currency: TWD in_stock: true reviews_count: 5 category: "Pentek" url: https://www.desertcart.tw/products/253575592-pentek-155247-43-rfc-20bb-carbon-filter-20-x-4 store_origin: TW region: Taiwan --- # 25 Micron filtration precision Radial Flow design for low pressure drop NSF certified for trusted safety Pentek - 155247-43 RFC-20BB Carbon Filter (20" x 4.5"), 25 Micron **Brand:** pentek **Price:** NT$11359 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your water game with every drop—because your home deserves the best! ## Quick Answers - **What is this?** Pentek - 155247-43 RFC-20BB Carbon Filter (20" x 4.5"), 25 Micron by pentek - **How much does it cost?** NT$11359 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/253575592-pentek-155247-43-rfc-20bb-carbon-filter-20-x-4) ## 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 - • **Certified Peace of Mind:** NSF International certified, ensuring your water meets the highest safety and quality standards. - • **Crystal Clear Hydration:** Reduces sediment, chlorine taste & odor for pure, refreshing water every time. - • **Radical Flow Innovation:** Unique radial flow design minimizes pressure drop and carbon fines for smooth, clean water flow. - • **Long-Lasting Performance:** Impressive 100,000-gallon capacity means you replace less and enjoy more—up to 1 year of premium filtration. - • **Universal Fit, Zero Hassle:** Fits all 20" Pentair Pentek Big Blue and other heavy-duty housings—easy swap, no stress. ## Overview The Pentek 155247-43 RFC-20BB is a 20" x 4.5" granular activated carbon filter cartridge designed for whole-house filtration. Featuring a 25-micron filtration rating and a unique radial flow design, it reduces chlorine taste, odor, and sediment while maintaining low pressure drop. NSF certified and boasting a 100,000-gallon capacity, this filter fits all standard 20" heavy-duty housings, delivering cleaner, better-tasting water for up to one year. ## 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 - Reduces sediment and chlorine taste & odor to provide great tasting, clearer water - FITS ALL 20" Pentair Pentek Big Blue or other 20" heavy duty filter housings and can replace any 20" x 4.5" carbon filter cartridge - UNIQUE RADICAL FLOW DESIGN offers low pressure drop, while significantly reducing release of carbon fines commonly associated with GAC cartridges - NSF INTERNATIONAL d and certified for your peace of mind - 100,000 GALLON CAPACITY. Replace every 1 year or when you notice a drop in water pressure or water quality ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003SRQG0U | | Best Sellers Rank | #21,554 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #68 in Replacement Water Filters | | Brand | Pentek | | Brand Name | Pentek | | Customer Reviews | 4.6 out of 5 stars 727 Reviews | | EU Spare Part Availability Duration | 1 Years | | External Testing Certification | NSF, ANSI | | External testing certification | NSF, ANSI | | Global Trade Identification Number | 00051678247433 | | 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 | | Item weight | 2.5 Pounds | | Manufacturer | Pentair Industries | | Manufacturer Part Number | 155247-43 | | Material | Granular Activated Carbon | | Material Type | Granular Activated Carbon | | Model Number | RFC20-BB | | Number of Items | 1 | | Number of Packs | 1 | | Product Benefits | Reduces Chlorine | | Product benefits | Reduces Chlorine | | Product dimensions | 11.4D x 11.4W x 50.8H centimeters | | Set Name | Single Water Filter Cartridge | | UPC | 051678247433 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Pentek - **External testing certification:** NSF, ANSI - **Item weight:** 1.13 kg - **Material:** Granular Activated Carbon - **Product benefits:** Reduces Chlorine ## Images ![Pentek - 155247-43 RFC-20BB Carbon Filter (20" x 4.5"), 25 Micron - Image 1](https://m.media-amazon.com/images/I/61Da7aesdRL.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.tw/products/253575592-pentek-155247-43-rfc-20bb-carbon-filter-20-x-4](https://www.desertcart.tw/products/253575592-pentek-155247-43-rfc-20bb-carbon-filter-20-x-4) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-10-08*