Roof mounted axial flow fans, with vertical air discharge configuration, for air extract.Casing formed from rolled sheet steel welded on the base with a corrosion resistant hot dipped galvanized finish.Backdraft shutter and bird proof outlet guard. Cylindrical casing formed from rolled sheet steel protected against corrosion by grey polyester paint coating.Dynamically balanced variable pitch angle impeller, made from high grade aluminum blades locked within a pressed sheet steel hub.Electrical isolator IP65 fitted to fan casing.Three phase motor, IP55, Class F.Standard operation temperature range -20ºC to +50ºC.
