Features

Centrifugal circular duct fan for direct installation in the duct system. For delivery of medium and small air volumes against high resistance. Casing made from galvanised sheet steel with spigots to fit standard duct sizes. Backward curved centrifugal impeller from galvanised sheet steel. Directly fitted on motor and dynamically balanced as a unit providing low noise level and high efficiency. Single-phase AC external rotor motor, enclosed design, maintenance-free, built-in thermal contacts, sealed, low-noise ball bearings with long-term lubrication. Power control: by means of electronic controller or step transformer.