The Comfort Zone Dual Window Fan offers versatile cooling options with its 2-speed dial control and individually reversible fan heads that can be rotated 180 degrees to blow air in or out without removing the fan from the window. This energy-efficient fan features auto-locking expanders that adjust from 22.25 to 31.25 inches wide to fit a variety of window sizes and includes a removable plastic bug screen to keep out debris. With a compact portable design and removable feet for tabletop use this fan is perfect for cooling medium-sized rooms offices or dorm spaces.