... ,hypro bearing max air flow:34.5CFM ADDA AD8020(T) industrial fan General Specification1Electric Strength 5mA max at 1500VAC for 1 min ... ) industrial fan detailed specification:1. frame size(mm): 80X80X202. bearing system type: ball,sleeve,hypro bearing3. rated voltage:12V,24V4. rated speed: 21 ... FG9. safety approvals: CE,TUV,UL,cU ADDA AD8020(T) industrial fan