Written by 
The Lasko 3755 20 In. Weather Shield® Box Fan with thermostat keeps you cool while restraining energy costs! It only runs until the room reaches the desired temperature, and then automatically turns on or off to maintain that temperature. It has three whisper quiet speed settings, so you can adjust its performance to any situation! Its effectiveness is enhanced by a patented Weather Shield® motor for worry-free window use, a wider body for greater floor stability, and easy-to-use controls located on the handle. The fan has a patented fused plug cord for added safety.
