Description:Higher air flow to enhance cooling performance.Dimension: 150 x 150 x 50mm / 5.91" x 5.91" x 1.97" (L*W*H)Voltage: AC 220/240V; Rated Current: 0.22-AMPBearing Type: Sleeve Bearing; Speed (R.P.M.): 2700 R.P.M. (+ / - 10%).Excellent performance and impeccable quality for dc cooling fan.