Waterdrop Water Filter Cartridges, Replacement for Brita Maxtra+ Plus, Maxtra Pro All-in-1, Compatible with Brita Marella Jug, Kettle, Reduce PFAS, PFOA/PFOS, TÜV SÜD, NSF Certified (10)NOTE: Please do not throw away the small blue valve in the package after receiving the goods, and read the valve installation steps and instructions carefully so that it can work better with your water filter jug! These filters are not compatible with Waterdrop Jugs! Replacement Model: Replacement for Brita Maxtra+, Maxtra Proreplacement for Brita water filter jugs, Marella, Marella XL, Aluna, Flow XXL, Style, Glass. Also compatible with Amazon