Inline centrifugal duct fan is a straight through radial fan. It is compact, Featuring an elevated capacity and very Installation is a breeze the fan can cope equipped with substantial pressure and long duct runs, Whilst still operating at an acceptable sound level. The fan velocity may be controlled by voltage or frequency variation regulators. Several fans can link to the same controller provided the total nominal current of the fans does not exceed the rating of controller. The circular inline fans are moisture resistant and are approved for installing in humid or damp environments. The fans are rated ip44 when installed in a duct system. They must not can serve as transporting grinding dust, Soot or similar air borne particles. The casing is produced from pre, Galvanized steel. Automatic thermo, Contacts open if the temperature within the motor windings becomes excessive.