Window fan with expandable sides

Honeywell window fan with expandable sides. runs great. has had work done on cord as you will see in the photo above it doesn't affect the working order of fan. features two fans for intake, exhaust, or air exchange.  Adjustable extender panels help secure the fan in various window sizes.  It may have multiple speed settings and a thermostat for customized comfort.  Window fans can help circulate air and reduce the need for air conditioning.  Placing fans facing outwards on the hottest side of the house is recommended.  Some models have a "Circ" setting where the fan runs intermittently.