Hayward CX1750RE, ALL AMERICAN Replacement Cartridge, Unicel C-8417, Pleatco PA175, Filbur FC-1294, Sta-Rite Posi-Clear PXC150, Star Clear Plus C1750, Sta-Rite 25230-0150S Swimming Pool Filter Cartridge PLEASE CHECK ... DOES YOUR CARTRIDGE MATCH THESE MEASUREMENTS ??? LENGTH: 28 3/16 inches ... OUTER DIAMETER: 8 15/16 inches ... INNER DIAMETER: 4 inches tolerance plus or minus 1/16" ... 175 square feet ... 205 pleats Replacement Cartridge fits: Hayward CX1750RE, Unicel C-8417, Pleatco PA175 Star Clear Plus C1750, All American 8003, Sta-Rite Posi-Clear PXC150, Sta-Rite 25230-0150S, Filbur FC-1294 MADE IN THE USA! ... When you make a purchase, you're supporting a small business with the entrepreneurial spirit that made America great!