Americ confined space fans & blowers generate continuous negative & positive airflow & provide superior ventilation in confined spaces such as manholes & sewers. They feature rugged, reliable polyethylene construction to keep the workers comfortable & safe in extreme work settings and are equipped with thermally protected, totally enclosed motors that are ideal for prolonged services. Further, these UL-listed axial type blowers produce high volume of air at low pressures and have dual wall shell design for protecting internal mechanisms & airflow. They are easily stacked to save space in storage & work areas and have built-in handles for portability. Choose from a wide range of these blowers, available in blue and bright yellow colours for improved visibility.