Hayward CCX1000RE Xstream CC1000RE All American Replacement Cartridge Unicel C-8311 Pleatco PXST100 Filbur FC-1285 Aladdin 19935 Swimming Pool Filter Cartridge DOES YOUR CARTRIDGE MATCH THESE MEASUREMENTS ??? Height 17 3/8 inches / Outer Diameter 8 15/16 inches / Inner Diameter 4 inches Replacement Cartridge fits: Hayward CC1000RE Xstream, Hayward CC1000RE Xstream Aladdin 19935, Unicel C-8311, Pleatco PXST100, Filbur FC-1285 MADE IN THE USA! When you make a purchase, you're supporting a small business with the entrepreneurial spirit that made America great!