Nispira Replacement Filters for UPSKY 2.5L/84oz, 3.5L/118oz, 4L/135oz, 4.5L/152oz, 5.5L/186oz & 6.5L/1.6 Gallon Dog Water Fountains, Activated Carbon and Ion Exchange Resin Filtration Vacuum Compared to part MD1-0039

Compared to part MD1-0039

It replaces the origin part number 9991466-R4

Nispira filters are tested for dependable performance and easy replacement

5 seconds (about 40 drips per minute)

Nispira Replacement Filters for UPSKY 2.5L/84oz, 3.5L/118oz, 4L/135oz, 4.5L/152oz, 5.5L/186oz & 6.5L/1.6 Gallon Dog Water Fountains, Activated Carbon and Ion Exchange Resin Filtration Vacuum Compared to part MD1-0039Ensure your dog enjoys clean, great tasting water every day with the Nispira 8 Pack Replacement Filters, compatible with 2. 5L (84oz), 3. 5L (118oz), 4L (135oz), 4. 5L (152oz), 5. 5L (186oz), and 6. 5L (1. 6 Gallon) dog water fountains. Each premium filter features a dual layer filtration system that combines activated carbon and ion exchange resin, effectively removing hair, debris, chlorine, and heavy metals while reducing odors and improving water