Silicone Rubber Enclosure Heater Thermostat Closes 110 Degrees F Opens 140 Degrees F 250 W Watts Heater Voltage 120V AC 1 Phase Height 1/2 in Length 10 in Width 4 1/2 in Mounting Dimension 7 in Mounting Holes O.C. Oblong 5/32 x 1/4 in Includes 48 in Leads