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Excessive pressure drop: Verify cartridges/grids are installed correctly
Designed to fit select cartridge filter housings that use this cartridge style
CMP 25591-211-000 Spa Master 2
or extended swimmer use
Unicel 12" Filter Grid for Astral/Pac Fab/American/Hayward | PG-1902 Pool Light Parts Excessive pressure drop: Verify cartridges/gridsUnicel PG 1902 D. E. Filter Grid Replacement (Vertical Grid Style) The Unicel PG 1902 is a replacement diatomaceous earth (D. E.) filter grid used in select vertical grid D. E. pool filters. D. E. grids are the primary filtration media inside the filter tankcapturing very fine debris when properly charged with D. E. powder. Replacing a worn or torn grid helps restore water clarity and helps prevent D. E. powder from returning to the pool. Key Features
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