Excel Filters XLS-804, Replacement Cartridge for Hayward CX800RE Excel filters are made in the USA to ensure highest quality, easy to clean and long useful life Proprietary point bond media for the industry's most efficient and effective filtration Replaces uncial C8600, pleatco PA80, PA804, filbur FC1280 Open flow core for optimal flow dynamics and less energy consumption during filtration process Durable, reinforced banding and uniform pleats provides effective dirt loading and ease of cleaning