Tube Axial Flow Fan covering a wide range in wall mounting tubular casing design with Energy Efficient Axial flow Fan impellers having variable pitch angle, dynamically balanced impeller for direct driven Arrangement. Available Sizes: 1 feet to 6 feet ( 300 mm to 1800 mm) Number of Blades: 4 to 12 Air Flow: Up to 1,00,000 CFM (47