ovens. This FDO thermostat features a 3/16" x 14-3/4" sensing bulb with a 48" capillary and an adjustable temperature range of 150–550°F. It works by sensing the internal oven temperature and automatically cycling the heating system on or off to match the selected setting. This precise regulation helps prevent overheating or temperature fluctuations, supporting even cooking results and efficient energy use. Its dependable design makes it a practical replacement part for maintaining stable and consistent oven operation in busy foodservice environments.