This fan clamps to materials up to 1-1/2 inches thick, including pipe and 2-by lumber. It features two speed settings and a multi-directional rotating head for customized airflow. It offers over 40 hours of runtime on a P193 6.0 Ah battery and is part of the RYOBI ONE+ System. The price drops from $29.97 to $19.97. Shipping is free.