... of fan size: 620mm (24″), 780mm(30″), 830mm(32″), 900mm(35″), 1000mm(39″), 1100mm(43″), 1220mm(48″), 1380mm (54″), 1530mm(60″).6 ... belt to meet the requirements of different customers.7. Our fans have all passed the static and dynamic balance testing, ... decibels)Input power(w)Rated voltage(v)Height×Width×Thickness(mm)24″1400570055≤70250380620×620×40030″9602300075≤70750380780×780×42032″14002000060 ...