The DWDI range are belt driven centrifugal fans designed for situations which require high pressures to remove unwanted dust, reside, or fumes in a number of industrial and commercial contexts. The DWDISigrist Design Australian Made and Owned series incorporates double width, double inlet impellers powered by a four pole, single phase motor, and encased by a galvanised steel drive guard. This allows the DWDI range to effectively provide ventilation to a wide variety of environments, including office buildings, shopping centres, classrooms, and hospitals.