Ultra-Fine Filter Panels Compatible with Dolphin Robotic Pool Cleaners,Replace Part#9991467-R4,Pleated Cartridge Filter Replacement for Dolphin S200,Proteus DX4,Active 20,Active 30,M600,S300iBrand: CLLOMAGY Features: Ultra fine filter panels: replace Part#: 9991467 R4, Direct replacement for Dolphin robotic pool cleaners. Compatible with Dolphin robotic pool cleaners models below: Active 20, Active 30, Active 30i, Active 40, Active 60 Advantage Ultra Discovery (new) Explorer E30, Explorer E50 M600 Mercury Premium Proteus DX4, Proteus DX5i Prowler 920, Prowler 930, Prowler 930W Ouantum S200, S300, S300i, S400 T35, T45, T55i Triton PS,