Pentair 42002-0007S Control Board Kit Replacement NA and LP Series Pool/Spa Heater Electrical Systems Control board kit replacement Fits Pentair MasterTemp NA and LP Series Pool and Spa Heater Electrical Systems Also fits Pentair Sta-Rite Max-E-Therm NA and LP-Series pool and spa heater electrical systems Measures 6-inch length by 6-inch height by 6-inch width