50 inch flame proof industrial extraction commercial grade fan stainless steel blades with auto shutters ,galvanised construction of frame and cabinet  ,this is high end quality built extraction fan for commercial operation ,these are perfect for big industry were you have to remove bad air quick and fast with continues flow this is the fan you need 240 volt single phase explosive proof motor ,,also have 3 phase in stock ring for price and delivery to anywere in Australia

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