Brand new Supco Refrigerator Defrost Thermostat 37T31 Style, Opens: 50 Closes: 10, SLT50. Can handle electrical loads up to 10 amps at 120VAC and 5 amps at 250VAC. The SLT Series of 3/4" (19mm) bimetal disc temperature controls from Therm-O-Disc offers proven reliability in a moisture resistant sealed design.