The direct drive blowers have a forward curved wheel mounted directly to the motor shaft. Double inlet allows air to be drawn from both sides. The motors are 4 or 6 pole, 3 speed and some models maybe fitted with a particular size capacitor to give the desired performance.
All motors have thermal overload protection and insulation that conforms to class B requirements. The housings are made from G2 Galvabond Steel Z275.
DDG uses the ‘G’ type wheels which have plastic wheels available from 82mm, 203mm, 241 & 270mm diameter.