The Polaris Fine Mesh Replacement Filter Canister R0517800 is for the Polaris 9300, 9300xi, 9350, 9400, 9450, 9550 Sport, 9650iQ Robotic Pool Cleaners. The fine filter canister is the middle level of filtration for the Polaris Robotic Cleaners. The highest level of filtration is provided by the Ultra Fine Sand/Silt Canister R0535800.
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