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💧 Elevate your water purity game with Pentair’s Big Blue DI filter — because your projects deserve nothing less!
The Pentair Pentek BBF1-20MB is a 20" x 4.5" high-capacity deionization water filter cartridge featuring semiconductor-grade mixed bed resin with 1850 grain capacity. It produces ultra-pure water with up to 16 megohm resistivity, ideal for pharmaceutical, medical, cosmetics, and electronics applications. Designed to fit all standard 20" Big Blue housings, it offers cost-effective, long-lasting performance with low total organic carbon and total dissolved solids, supported by durable polypropylene construction and Buna-N gaskets for reliable sealing.











| ASIN | B004H3547U |
| Best Sellers Rank | #113,666 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #870 in Filters & Filter Media |
| Brand Name | Pentek |
| Customer Reviews | 4.4 4.4 out of 5 stars (54) |
| External Testing Certification | FDA |
| Global Trade Identification Number | 00051678281031 |
| Item Dimensions D x W x H | 5"D x 5"W x 21.18"H |
| Item Type Name | Big Blue Deionization Water Filter, 20-Inch, Mixed Bed Deionization Filter Cartridge, 20" x 4.5" |
| Item Weight | 8.3 pounds |
| Manufacturer | Pentair Industries |
| Manufacturer Part Number | 155281-44 |
| Material Type | Polypropylene (PP) |
| Model Number | BBF-20MB |
| Number of Items | 1 |
| Product Benefits | Removes Odor |
| UPC | 051678281031 |
| Unit Count | 1 Count |
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