MaxxAir HVFF20UPS is a 20" high-velocity floor fan that requires minimal assembly. The fan can be tilted to the desired angle for optimal airflow. The speed control allows you to choose between low, medium, or high speeds. It features a thermal cutoff that will automatically shut off the motor if it overheats. The motor bearings are permanently sealed and do not require additional lubrication. The fan is easy to clean with a soft, damp cloth.