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💧 Elevate your hydration game with every sip—because your water should work as hard as you do.
The iSpring F21KU75 is a comprehensive 21-piece replacement cartridge set designed for 7-stage 75 GPD reverse osmosis systems. NSF certified for up to 97% TDS rejection, it includes sediment, granular and carbon block filters, alkaline mineral filters to restore essential minerals, and UV filters for added purification. With a 2-year supply and quick-connect design, it ensures premium water quality and effortless maintenance for health-conscious professionals.










| Asin | B00BOCDJGK |
| Best Sellers Rank | #127,519 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #751 in Replacement Under-Sink Water Filters |
| Brand Name | iSpring |
| Compatible Water Purifier Models | AquaTru Alkaline, Connect, iSpring RCC1UP-AK, iSpring RCC7AK-UV |
| Customer Reviews | 4.8 4.8 out of 5 stars (58) 4.8 out of 5 stars |
| External Testing Certification | No |
| Global Trade Identification Number | 00662425058570 |
| Included Components | Water Filter and Fittings |
| Item Dimensions D X W X H | 12"D x 16"W x 16"H |
| Item Type Name | Water Filters |
| Manufacturer | iSpring |
| Manufacturer Part Number | F21KU75 |
| Material Type | Polypropylene (PP) |
| Model Number | F21KU75 |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Product Benefits | Improves water taste and quality, provides alkaline water with essential minerals |
| Set Name | 21 Piece Set |
| Unit Count | 1 Count |
| Upc | 662425058570 |
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