The Ryobi PCF02 4 inch Portable Drum Blower Fan in green is a versatile and efficient tool for improving indoor and outdoor air quality. With a round shape and compact design, this fan is powered by an 18V battery for convenient use anywhere. It features two speeds, a 360-degree rotation capability, and an adjustable tilt/head design for customizable airflow. The fan is lightweight and easy to carry, making it suitable for use in any room. With its durable ABS plastic construction and brand reputation of Ryobi, this portable drum blower fan is a reliable choice for keeping spaces cool and comfortable.