Germany NORD motor Aluminum Alloy Hub Place of Origin: China Certificate: CE MOQ: 1PC Unit Price:$2000 to $2500 Delivery: Within 8 days after order confirmationDetailed SpecificationsModelSYD48Fan Diameter3.8M (12FT)Airfoil MaterialAluminum AlloyAirfoil FinishesPlastic SprayingWeight98KGHeight1.1M (3.3FT)Number of Airfoils6PCSController includedYesVoltage220V/380V/415VFrequency50HZ/60HZRPM(min/max)20/55RPMPower1.5KWCoverage area700M²Warranty3YearsProtectionIP55Working Principle in Winter In winter, heat air always gathers on the higher space in the closed building. That is why in the large commercial space, even if we turn on the air conditioner to the largest point, people on the ground still feel cold. Under such circumstances, we need turn on the HVLS big ventilator fans to make it rotate in reverse direction so as to eliminate the separation of the cold layer and the heat layer and push the heat air to circulate well. Our Cases