Pleatco PFG1836 Cartridge/Grid Replacement for American, Hayward, Jacuzzi, Pac-Fab, Sta-Rite/Universal Grid Pleatco Cartridge Filter replacement Cartridge/Grid American, Hayward, Jacuzzi, Pac-Fab, Sta-Rite/"Universal" grid Unicel: FG-1003; FILBUR: FC-9330