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💧 Elevate your water game with Pentair’s powerhouse filtration—because your home deserves the best sip.
The Pentair Pentek GAC-20BB is a 20" granular activated carbon water filter cartridge designed for Big Blue housings. Certified by NSF/ANSI Standard 42, it effectively reduces chlorine, taste, and odor, delivering up to 25,000 gallons of cleaner water at a steady 4 gpm flow rate. Featuring an internal polypropylene expansion pad and spun polypropylene post-filter, it ensures even filtration and traps carbon fines, providing reliable, long-lasting performance in a convenient 4-pack.






| ASIN | B0BMFGX9JR |
| Best Sellers Rank | #7,770 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #57 in Replacement Under-Sink Water Filters |
| Brand Name | Pentek |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,320) |
| External Testing Certification | NSF |
| Global Trade Identification Number | 30051678249438 |
| Item Dimensions D x W x H | 4.5"D x 4.5"W x 20"H |
| Item Type Name | GAC Carbon Water Filter |
| Item Weight | 20 pounds |
| 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 |
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