Pentair 152227 22-Inch Tank Piping Assembly Replacement Sand Dollar and Sta-Rite Cristal-Flo II Pool/Spa Sand Filter Tank piping assembly replacement Fits Pentair Sta-Rite Cristal-Flo II high-rate pool and spa sand filters Also fits Pentair Sand Dollar blow molded pool and spa sand filter model SD80 Measures 22-inch tank size