This high-performing box fan from Lasko features a patented Weather-Shield motor for worry-free window use, plus a high performance grill for ultimate air flow. Three speeds and Save-Smart efficiency make this an ideal fan for any room where you need to increase cooling airflow. Additional features include: * Save-Smart efficiency--less than 2¢ per hour to operate * Innovative Wind Ring system for up to 30% more air velocity * 3 quiet speeds * Built-in carry handle * Fully assembled