Excel Filters Pool & Spa Filter, Xls-823 Replacement Cartridge for Waterway Clearwater Ii, Also Replaces Pleatco Pwwct200, Unicel C-8419, Filbur Fc-1288. 200 Square Foot Unlike most competing filters, excel filters are made in the USA to ensure highest quality Proprietary point bond media for the industry's most efficient and effective filtration Easy to clean and long useful life 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