Model AH Air Handling has a straight wheel impeller constructed of heave gauge steel with a spun frontplate. The spinning is curved at the inlet for optimum efficiency and lipped at the perimeter for integral strength necessary for industrial applications. Model AH is specifically designed for conveying a wide variety of industrial gasses including smoke and air containing small concentrations of light dust. Capacity selections are available up to 40,000 CFM and pressure selections up to 23 SP w.g.. Higher performances are also available with special construction based on your specific application.
More Info - See IE 0606 Industrial Exhausters Bulletin