Optimized impeller structure,large air volumeMotor with long service life and low noiseThree speeds,oscillating angle adjustable,two or three bladesSuitable for heat-stroke prevention and cooling-down in mineralfactories,workshop and warehouse etc. for ventilation andimproving environmentAir volume: 7800-18000 m³/hDiameter: 26'' (65cm)Power: 187WSpeeds: 3