The ERM-EX fans are the only mixed flow in line series in increased safety execution available on the market. They are built and certified according to ATEX Directive 2014/34/UE and EN14986/2017. The particular construction allows the installation in hazardous environment as: battery rooms, dyeing-plants, garages, etc. Suitable to convey clean air with working temperature from -20°C to +50°C. The ERM-EX series are not suitable for regulation.