The Holmes 20-inch Three-speed Performance Box Fan features five-fin aerodynamic blades coupled with a swirl grill design. Coupled with a powerful motor to provide 20% greater performance, this fan is designed to perform when you most need powerful airflow during the hot summer months. This 20" blade diameter is suitable for both medium and large rooms. The fan features a sturdy metal frame with integrated carry handle and includes additional feet for added stability and a convenient cord wrap for easy storage. 120v. 256sq ft coverage. Black.