Hayward CX800RE CX1500 RE, NEW ECO-LINE CARTRIDGE, SAVE THE PLANET, Aladdin 17507, Unicel C-8600, Pleatco PA80, Filbur FC-1280, Star Clear II C-800 Swimming Pool Filter Cartridge LENGTH 17 3/8 in, OUTER DIAMETER 8 1/2 in, INNER DIAMETER 4 1/16 in, 75 square feet, 154 pleats Replacement Cartridge fits: Hayward CX800RE, Hayward CX1500RE, Star Clear II C-800 Unicel C-8600, Pleatco PA80, Filbur FC-1282, Aladdin 17507 PLEASE CHECK YOUR CARTRIDGE MEASUREMENTS FOR A MATCH MADE IN THE USA! This cartridge removes 75 ... 16 oz plastic bottles from the landfill.