Description: Size: 7"/ 7inch Voltage Rating: 12V Load Current: ≤5A Load Speed: 2800±10％r/min Wind-Speed: 3.0m/s Withstand Voltage: 500V Power: 80W Blade Diameter: 190mm Size: 9''/ 9inch Voltage :12V Wattage : 80W Fan Blade Diameter : 225mm / 8" Load Speed - 2500±10％r/min Load Current: ≤6A Wind speed -3.5m／s Cooling Spec: Up to a Max of 1450 CFM. Depth:68mm approx. Blade Type: Straight or Curved Size: 10''/ 10inch Fan Mounting Hole Distances：275mm x 135mm Mounting Bracket Hole Distances：310mm x 135mm Total Weight：approx.1250g Blade Shape：Curved Revolving speed：2500±10％r/min Wind speed：3.5m／s Size: 12''/ 12inch Voltage :12V Wattage :80W Blade Shape: Curved Revolving speed :1900±10％r/min Wind speed :3.0m／s.