CRAIG EQUIPMENT COMPANY, INC. . These corrosive resistant fans were installed in an industrial process lab. Sales, application and design assistance by Craig Equipment Company, Inc. Corrosive Resistant Fans Wood Dust Collection System This wood dust collection system includes the collector, fan and airlock. Sales, application and design assistance by Craig Equipment Company, Inc. These roof mounted exhaust fans were installed for a manufacturing factory.Sales, application and design assistance by Craig Equipment Company, Inc. Back to top Roof Mounted Exhaust Fans