4-3/32 INCH WIDTH X 2-11/16 INCH DEPTH X 3-7/8 INCH HEIGHT SIZE; UL APPROVAL; HIGH LIMIT, OIL-FIRED WATER HEATER APPLICATION; 120 TO 240 VOLT AC VOLTAGE RATING; HORIZONTAL MOUNTING; 100 TO 240 DEG F OPERATING TEMPERATURE; AQUASTAT[R] BRAND