This Maytronics 99954303-R1 50 Micron Commercial Filter Bag for Dolphin Deluxe 4, Deluxe 5, DX5s, DX6, Wave 75, Edge, Nautilus, Premer, Quest, Triton, Discovery, Prowler 820/830 Robotic Pool Cleaners is a reliable replacement part, designed to seamlessly intergrate with the original pool cleaning system. The filter bag collects unwanted debris, ensuring proper operation. Maytronics pool cleaners help keep your pool healthy and clean, which is of the utmost importance. Ensure that your pool cleaner is running as cleanly as possible with this certified genuine part.