With air flow volumes from 200 to 2500m3/h and up to 1000 pa (as a two-stage configeration) the Helios MV Mixed Flow fans are suitable for small to medium size ventilation in all kinds of rooms. The particular advantage is its small dimensions. The fitting is possible in each positions: horizontal and vertical. The motors are equipped with a maintenance free ball bearings for an operation period or at least 30,000 hours and they are totally enclosed. That’s why it is suitable for every application even in polluted and dusty air.