Pull cool air in or push hot air out and save big on air conditioning this summer! Hot summer days are right around the corner. This year, be prepared with this quality window fan. It has not one, but two 9" fans that create a cool, refreshing oasis. Use it to pull cool air into a room or reverse it in the window and push hot air out. Features 3 speed dial control, safety grill and built-in adjustable slide screens with lock. Fully assembled. Installs without tools. Fits window openings 24"-35" wide. 1-year limited warranty.