Aladdin 22002SVP-8 Hayward CX1200RE Replacement Filter Cartridge, Unicel C-8412, Pleatco PA120, Filbur FC-1293 Star Clear Plus C-1200, Clearwater Pro Clean 125 Swimming Pool Filter Cartridge LENGTH 23 5/16 inches OUTER DIAMETER 8 15/16 inches INNER DIAMETER 4 inches 125 square feet 172 pleats Replacement Cartridge fits: Hayward CX1200RE, Unicel C-8412, Pleatco PA120 Filbur FC-1293, Aladdin 22002 MADE IN THE USA