... Computer Fan 1.frame size(mm):80X80X25 2.bearing type:ball,sleeve,hypro bearing 3.rated voltage:12V,24V ADDA AD8025 Sleeve ... L10 relative humidity 65%+/-20% 5 Life Expectancy(Fluid Dynamic bearing): >60000hrs min at 40 degree C/L10 relative humidity 65 ... 10 Plastic Material Motor protection and polarity protectionADDA AD8025 Sleeve Bearing Case Computer Fan detailed specification:1. frame size(mm): ...