Our Replacement Cartridges Are Made To All Of The Top Manufacturers Specifications. Top Quality Urethane Tops And Remay Filter Elements Ensure Crystal Clear Water And Long Life. We Stock Thousands Of Manufacturer'S Cartridges Like: Star-Rite, Pac Fab, Hayward, Purex, American Products, Hot Springs, Coleman, And More. We Have Listed Some Of Our More Popular Replacement Cartridges Below, But We Carry Many, Many More. Please match the correct part # to order your cartridge