The portable Yellow Jacket fan ensures quiet operation with an acoustically designed fan, motor, and carriage, yet delivers maximum airflow coverage whether it's mounted on the ceiling, wall, or floor. Yellow Jacket's heavy-gauge steel carriage is engineered to withstand harsh environments and cut down on replacement and repair needs. Its oversized wheels and ergonomic handle offer operators easy movability, while the multiple speeds and easy-to-operate locking mechanism ensure control. Yellow Jacket Portable Fan by Big Ass Fans. Circle 220.