hile,save the energy costs of air condition. Specification - industrial home ceiling fansDiameter:3.7m/12ftPower:1.5KW/2.0HPSpeed:20-53RPMAir volume:5800CMMWeight:102Details of industrial home ceiling fansGermany impor NORD SK32F-VL90L/4 coaxial helical gear reducerFans Hub:American AA7075 super-hard aluminumalloy, high pressure precision forging forming, dynamic balancing test after CNC precision.6 pics airfoil fan blades; Aluminum alloy, anodized treatment after sand blasting and chemical pol