The 783 Vornado air circulator is one of Vornado's most powerful circulators. This adjustable height stand circulator uses signature energy efficient Vortex Action to move air up to 100 feet to provide complete whole room air circulation! Easily adjust the height to 28" or 40". This air circulator is ideal for use in large rooms. Comes with a limited 5 year warranty and easy to use 3 speed control. Use all year for energy savings.