The Maytronics Dolphin Filter Bag - 70 Micron (Item 99954305-R1) is specifically designed to to fit the following Pool Cleaners: Dolphin Deluxe 4, Dolphin Deluxe 5, Dolphin DX6, Dolphin Triton, Dolphin Edge, Dolphin Discovery, Dolphin Wave 75, Dolphin Nautilus, Dolphin Premier, Dolphin Prowler 820, Dolphin Prowler 830, Dolphin Quest