When temperatures heat up, keep cool with this Lasko square fan. This lightweight portable fan has three quiet speeds for custom comfort. A compact design that includes a carrying handle on top makes it easy to transport this fan from room to room as needed. Place it in a window with the five blades facing outwards to help pull warm air out of the room during the day. At night, position it with the blades facing inwards to draw in cool air from the outdoors. This energy efficient 20 inch box fan features a simple rotary control for quick and easy use.