... 3.Run-out: within 0.8mm 4.RoHS certificate Air curtain cross flow impeller/Aluminium Impeller Aluminium Impeller Mission: Zhejiang Langdi Group ... under 60C°, RoHS certificate, Run-out: within 0.8mm5.Cross flow impeller material is aluminum alloy. Long life ball bearing is ... , diameter, length, material when you want to make an order Air curtain cross flow impeller/Aluminium Impeller