... 3,with CE certificate Portable ventilator(portable blower,air blower,exhaust fan) Size:8" 10"12" 14"16" 18" 20 ... cover:galvanized steel,handle: die-cast plastics,cable length:3m motor: aluminum alloy,with America,Japan,Europe,Taiwan styles' plug ... novel design,special manufactured for underground cable maintainance,shipping making,exhaust for fire fighting, piping construction and in other violent ...