This fan proved superior to all others during comparison tests by the Hammacher Schlemmer Institute after rigorous testing of air velocity and quietness. The 18" fan circulated air up to 1,849' per minute, 22% more air velocity than the model that placed second, and the 1.8-amp motor consistently reached 1,533 rpms, ensuring efficient movement of air. Unlike other fans that made rattling noises when tested on the highest setting, this one has a durable tubular steel construction for whisper-quiet operation. The three speed fan tilts 180, it can be mounted to a wall using the included bracket, and the fan guards remove for ease of cleaning. 18" D. (13 lbs.)