Lasko 9" Reversible Twin Window Fan

The Lasko electronically reversible twin window fan will keep you cool both day and night. Two independently-controlled motor fans operate in three ways - intake to bring in fresh air exhaust to push out stale air and exchange to combine both operations. The thermostat senses room temperature and turns the fan on or off automatically to maintain the comfort level of your choice. It fits most windows double-hung casement or sliding from 22 inches to 32 inches. The expandable panels of this fully assembled unit provide a custom fit for your window space and the slim profile ensures that the outdoors is still within view.Independent motor control for air intake exhaust or exchange Adjustable thermostat for automatic comfort control Expander panels for a safe custom fit Fully assembled for window use