Convert your Dolphin pool cleaner from a bag filter to a cartridge filter. Cartridge assembly and bottom lid conversion kit works with the following Dolphin Robotic Pool Cleaners: Nautilus, DX6, Triton, Edge, Wave 75, Deluxe 4 & 5, Prowler 820 & 830, and Discovery. (Deluxe 4/5, DX5s, DX6, Discovery, Premier, Edge, Nautilus, Triton, Wave 75, Prowler 820/830, etc.) are more modern models that already use cassette filtration. 9991414-R1 / 9991414-ASSY is ideal for them. Maytronics Certified Genuine Parts. Keep your Dolphin pool cleaner in it's best condition. Maytronics part number: 9991414-R1 / 9991414-ASSY Cartridge assembly and bottom lid conversion kit works with the following Dolphin Robotic Pool Cleaners: Nautilus, DX6, Triton, Edge, Wave 75, Deluxe 4 & 5, Prowler 820 & 830, and Discovery. Compatible cleaners: Deluxe 4 - 99996351, Deluxe 4 - 99996353, Deluxe 5 - 99996381, Deluxe 5 - 99996383, Deluxe 5 - 99996383-TRV, DX5s - 99996383-CAR, DX6 - 99996361-DX6, DX6 - 99996363-DX6, DX6 - 99996369-DX6, Discovery - 99996349, Discovery - 99996353-DIS, Quest - 99996329, Premier - 99996339, Edge - 99996359-US, Edge - 99996359, Nautilus - 99996323, Triton - 99996356, Wave 75 - 99996366, Prowler 820 - 99996326, Prowler 830 - 99996346 The Maytronics Dolphin 9991414-ASSY Bottom Lid Cartridge Assembly & 4 Filters for Dolphin Robotic Pool Cleaners. The 9991414-ASSY is compatible with Dolphin Deluxe 4, Deluxe 5, Triton, Nautilus and Premier model robotic pool cleaners. Compatible cleaners: Deluxe 4 - 99996351 Deluxe 4 - 99996353 Deluxe 5 - 99996381 Deluxe 5 - 99996383 Deluxe 5 - 99996383-TRV DX5s - 99996383-CAR DX6 - 99996361-DX6 DX6 - 99996363-DX6 DX6 - 99996369-DX6 Discovery - 99996349 Discovery - 99996353-DIS Quest - 99996329 Premier - 99996339 Edge - 99996359-US Edge - 99996359 Nautilus - 99996323 Triton - 99996356 Wave 75 - 99996366 Prowler 820 - 99996326 Prowler 830 - 99996346