Feature combines the reliable performance of the scroll type centrifugal fans with the compactness of axial flow fans. Used in many types of ventilation systems where the installation of conventional centrifugal fans is impractical.

• The cylindrical models -- are compact in size and may appear as the ductwork.
• The square in-line models -- although a bit larger than the cylindrical models, offer the ease in maintenance access with their removable panels.