3L11 & 3F11 Bimetal Disc Thermostats White Rodgers 3L11 and 3F11 Bimetal Disc Thermostats include 2-pin, aluminum disc cup, SPST contact, and 1/4-inch quick connect terminations. These bimetal thermostats feature a loose ring and stainless steel mounting brackets. The 3L11 and 3F11 thermostats either opens or closes depending on different ranges of temperature rise. These thermostats are available with 15A at 120VAC and 10A at 240VAC resistive ratings.