ReplacementBrand RB-CLEAR-R4 Comparable Maxtra Filter Cartridges, 4-Pack Comparable to the Filter Logic FL402H cartridge and Mavea/Maxtra 1001122 High Quality carbon/ion-exchange blend to remove chlorine, taste, odor, and lime scale Each Filter lasts for 30 days or 150 liters Fits in Pitchers, kettles, and other Brita Maxtra and Laica Bi-Flux appliances Pack of 4 filters for 4 months of clean water