Black+Decker - 9 inch Dual Window Fan for Window Screen with 2 Speed Settings - Black

The Electrically Reversible Twin Window Fan with Bluetooth from Lasko allows you to control your fan with your smart phone. Two independently controlled motors for intake, exhaust, or air exchange. Easily adjust the brightness of the easy-to-read digital display. The included thermostat senses room temperature and turns fan on or off to maintain comfort. Features an electronic 8-hour timer and 3 quiet speeds. This window fan includes expanding side panels for a safe custom fit in double hung, casement, or sliding windows sized 24 to 32 inches wide and 12 inches high or larger. Comes equipped with the Lasko Blue Plug, patented safety fuse technology. Fully assembled for window use.

This Optimus F-5286 8" electrically reversible twin window fan features a 3-speed rain-resistant motor and automatic thermostat control for custom operation, so you can easily maintain a comfortable temperature in your office or living space.

Transom is the result of a complete re-imagining of what a window fan should be. The air chamber abundantly draws fresh air from the outside in — or reverses electronically to exhaust stale air out. Powerful airflow circulation and comfort at half the height of conventional window fans, Transom is easy to install, blends elegantly into the space and preservesyour view. Transom seals off windows 26” to 40” wide with the patented Soft-fit System that provides a sleek, satisfying and snug fit from end to end, without having to remove your screen. Transom – a new kind of window fan.