Create a more comfortable environment in your home with the Bionaire Twin Reversible Airflow Window Fan with Remote Control. Twin fan blades with independent settings allow this window fan to draw in fresh air from outside, exhaust hot air from inside, or do both simultaneously. A programmable fan thermostat with LCD screen lets you select a desired room temperature, and the fan automatically turns blades on and off to maintain the selected comfort level when operating in automatic mode. The fan's settings can be conveniently controlled using the included remote control. This fan is designed to fit double-hung, vertical slider, and casement windows 24 to 37 inches wide. It measures 13 inches tall and includes extenders for a custom fit.