3" HiVis Air Mover. HiVis venturi style air movers are used in many industrial and construction sites where there is a need to disperse hazardous fumes, move air into a confined space, cool individuals in elevated temperature conditions, or ventilate equipment and machinery with a blast of directed air. Common applications include shipyards, refineries, chemical plants, paper mills and manhole ventilation. - No moving parts - Minimal maintenance required - Can be used as a blower or for exhaust - Safe in hazardous areas - Performance-tested - Lightweight and portable - Grounding cable included