Lasko Electrically Reversible Twin Window Fan with Bluetooth - 3 Speed - Thermostat, Reverse Airflow, Timer, Bluetooth - 10.2in Height x 21.7in Width

1-year limited warranty Fully assembled Includes expanding side panels for a safe custom fit in double hung, casement, or sliding windows sized 24in to 32in wide and 12in high or larger Twin, independently controlled motors for intake, exhaust, or air exchange 3 quiet speeds E.T.L. listed Control using your smart phone with Blutooth technology