The motor is located outside the air stream. This ensures long service life especially if exhaust air is
contaminated with dust and other airborne particles.
Elegant profile design makes roof line aesthetically pleasant.
Centrifugal design fan which has higher static pressure allows it to be ducted for reaching out at a further distance.
Fan wheel and housing are made of aluminum alloy material. Light weight and minimum load on the metal roof structure.
The belt-driven design enables the fan to run at lower speed and hence low noise level.