Pentair 272531 Hi-Flow Top Valve Assembly Replacement Pool/Spa Filter and Valve HiFlow top valve assembly replacement Fits Pentair Six-Way 1-1/2-inch HiFlow pool and spa multiport valves Also fits Pentair Sand Dollar pool and spa sand filters Measures 9-1/2-inch length by 9-1/2-inch height by 9-1/2-inch width