GE 3AAT86B9A1/RUUD 41-20804-16 THERMOSTAT WITH SUBBASE 2 STAGE HEATING / 1 STAGE COOLING / 1.5AMP / WITH SUBBASE / 50F-90F SWITCH FOR HEAT PUMP SYSTEM FAN-ON / EMERGENCY HEAT AUX HEAT / NON-PROGRAMMABLE RUUD# 41-20804-16. "RUUD" LOGO ON FRONT. GENERAL ELECTRIC MANUFACTURER 2 3/4"H X 6 1/4"W X 1 3/4"D