Dolphin Cleaners 9991467-R4 Ultra-Fine Mesh Cartridge Filter Kit (Set Of 4)The Dolphin Cleaners 9991467 R4 Ultra Fine Mesh Cartridge Filter Kit is designed to provide superior filtration for your Maytronics Dolphin robotic pool cleaner. Compatible with models such as the S200, S300, S300i, Active 20, Active 30, Active 30i, Prowler 920, Prowler 930, Discovery, Premium, Quantum, Triton PS, and Triton PS Plus, this filter kit ensures optimal performance. With their high efficiency design, they enhance your cleaners performance,