The Vent Axia ACM range of energy efficient Mixed Flow In-Line fans that are now quieter than any other product on the market. ACM is now in a range of six products in the range which have been designed for use with rigid and flexible ducting. In Line Mixed Flow fans offer two and half times the pressure of conventional axial fans, are dimensionally more compact making them ideal for many ducted applications. The impeller blade design with guide vanes provides optimum pressure characteristics and simple connectivity and quieter more efficient running provides the complete solution. The ACM Mixed Flow In-Line fan can operate in both horizontal and vertical positions and can be mounted to meet its optimum performance.