Germany NORD Motor Germany REXROTH Inverter Aluminum Alloy Blades Place of Origin: China Certificate: CE MOQ: 1PC Unit Price:$2300 to $2700 Delivery: Within 8 days after order confirmationSIYI industrial ceiling fan is a type of industrial fan used in large space and industrial settings. Unlike residential ceiling fans that are typically 36 to 56 inches in diameter, SIYI industrial large ceiling fans have very large diameters that start from12 feet to 24 feet. SIYI industrial big exhaust fans move very slowly unlike standard fans which operate at high speed. With large diameters and low rotating speed, SIYI industrial big ceiling fans are able to move mass amounts of air and then push the natural wind to super large area, so it is also named "high volume, low speed" HVLS fan.Detailed SpecificationsModelSYD73Fan Diameter7.3M (24FT)Airfoil MaterialAluminum AlloyAirfoil FinishesFluorocarbon CoatingWeight155KGHeight1.1M (3.3FT)Number of Airfoils6PCSController includedYesVoltage220V/380V/415VFrequency50HZ/60HZRPM(min/max)20/50RPMPower1.5KWCoverage area1300M²Warranty3YearsProtectionIP55How to guarantee the safety? 1,When accident happens, the inverter will cut off the power supply automatically so as to protect people. 2,Even if the motor shaft is broken, the fan will not fall down, because the anti-off board will hook it. 3,The 4 pcs of cable not only keep balance for fan, but also protect the whole fan from falling down. 4,All the blades are connected together by plate so as to protect the blades from falling down. Our Cases