ENERGY STAR qualified 10000 Btu Uni-Fit universal fit 230/208v thru-the-wall room air conditioner has an EER of 9.4 and installs through walls up to 16 1/4" deep to condition rooms up to approximately 450 sq. ft. * Universal fit for easy replacement in existing 24" 1/2 to 27" wall sleeves * 24-hour timer lets you program on & off times * Includes universal fit trim ring to cover up to 1" gap on sides and 1/2" gap on top depending on existing sleeve size * Money Saver saves money by operating the fan only when cooling