... Jet Fan YD2.5-3The induction jet fan is based on high-speed jet fan ventilation which induces a new ... proven tunnel ventilation principles, producing a high velocity jet which thrusts against the air in front of ... throughout the entire area.The use of induction jet fans achieves ventilation results superior to the conventional ... . (Item No.: YD2.5-3) 2012 New Industrial Induction Ventilation Jet Fan