Holmes Window Fan with with Twin 6-Inch Reversible Airflow Blades – Link
Amazon has this currently marked down to only $15.05!
- Dual-blade operation for a powerful, cooling breeze
- Two speed settings and manual-reverse airflow control
- Water-resistant motors are safe to use during rainy weather
- Designed to fit most double-hung and slider windows
- Adjustable extender screen and extender panel help secure fan in larger windows
- Ideal for large rooms up to 500 sq. ft.