DC CROSSFLOW FAN 1) Dimension: a)108*90*30mm b)168*150*30mm c)210*190*30mm d)328*200*30mm e)310*290*30mm f)108*98*40mm g) 170*150*40mm h)220*200*40mm i)240*220*40mm j)270*250*40mm k)320*300*40mm 2) Rated voltage: 12V/24V DC 3) Type: ball bearing, sleeve bearing 4) Safety Approvals: CE, TUV, UL, CUL, CCC 5) Electric strength: 1mAmax at 1000VAC for 1 min between lead wire and frame. 6) Insulation resistance: 10M ohm between lead wire and frame (DC 500V) 7) Life expectancy (ball bearing):50,000hrs rain at 25 degree C relative humidity 65%+/-20% 8)Life expectancy(sleeve bearing):>30,000hrs rain at 25 degree C relative humidity 65%+/-20% 9)Operation temperature:-10 to 70℃ 10)Storage temperature:-40 to 75℃ 11) Lead Wire: UL1007 (AWG18-30) 12) Protection: Motor protection and polarity protection 13) Plastic Material: Black PBT (UL 94v-0) glass filled 14) Frame: iron Impeller: aluminum alloy 15) Function: Function type is optional