Not only does Clarage offer a complete line of axial flow and centrifugal fans for mine ventilation applications, we can also provide the design of the connecting duct from the mine shaft collar to the fan inlet connection. Improper duct design will reduce fan performance and add unnecessary pressure loss to the system. Both conditions contribute to added horsepower and operating cost. We believe that providing the duct design to optimize fan performance is not enough. Our fan systems include a power consumption guarantee backed by a factory or model test. Call us for the details.