1,industrial cooling fan 2,CCC motor 3,CE and ISO9001 Certificate 4, ... lower noise and strong pressure features. The TSBD Ventilation Fan is characterized by its unique shutte blades and closing system ... -4900*900*400300000.37380770427 Noise(db)Outer frame material Fan blade materialWeight(kg)65galvanized sheetStainless steel7060galvanized sheetStainless steel6060galvanized sheetStainless ...