Order Delfield SEP90106 Thermostat W/ 3/16" X 11-7/8" Nickel Bulb, S-Type today! Shop Restaurant Equipment Parts & Accessories at PartsFe with same-day shipping, available at the best prices. The Delfield SEP90106 Thermostat is a high-quality replacement part designed for commercial refrigeration equipment. It features a 3/16" x 11-7/8" nickel bulb that ensures precise temperature sensing and regulation. The S-type thermostat is engineered for durability and reliability in demanding kitchen environments. This thermostat maintains optimal cooling performance by accurately controlling the temperature inside refrigeration units.