1 Stand exhaust fan 2 cast iron base,heavy duty 3 powerful flow 4 ... .9m 5 easy opreate,competitve p 16" & 20" STAND FANThe fan has features with low noise, power source saving, reasonably-designed ... and air blast in the working occasions such as mining, industrial enterprises, civil—use buildings, metallurgy, power station, etc.MOTOR SIZE98 ...