This 16 Inch Electrically powered Tornado Blower (Vaneaxial) Previously under the name of Prime is made for the most demanding users, and it has an explosion proof fan cooled motor. 230/3Phase/2HP Some of the uses of this blower are for ventilation of tanks, manholes, process vessels and similar confined spaces. It can also be used for cooling or drying applications. This blower is certified for NEMA Class 1, Div. 1, Group D and Class II Group E, F & G hazardous areas. The unit is fully assembled when shipped from the factory. They are ready to use right out of the box. The unit comes with 25 feet of electrical cable rated for “Extra Hard Use”. The unit has an explosion proof plug that conforms to NEC guidelines.