12000 BTU - 9.8 EER - Wall Master Series Room Air Conditioner, 230-volt Energy star commercial grade thru-the-wall room ac; 9.8 EER; installs through walls up to 15 5/16" deep to condition rooms up to approx. 550 sq. Ft Fits Fedders a and Fedders b sleeves with baffle adapter kit 24-Hour timer lets you program on & off times. Window Dimensions - Height: 15 3/4 inch. Voltage- 230/208. Cooling Amps- 5.5/5.8 Smart fan auto adjusts fan speed to maintain desired temperature Money saver saves money by operating the fan only when cooling