Cartridge finder/Waterway Plastics Front Access Roadster Skim Filter 100Waterway Plastics · spa filterFront Access Roadster Skim Filter 100SeriesFront Access Roadster Skim FilterModel100TypeSpa filterSame replacement partAlso fits these filtersWaterway Plastics Front Access Oval Skim Filter 501 cartridge→Waterway Plastics Front Access Oval Skim Filter 1002 cartridges→