Vaneaxial models VXD and VXB are the perfect choice when high volume, compact size, superior quality and long lasting fans are needed. These AMCA licensed products are among the most efficient and quitest axial fans. PennBarry's direct drive Vaneaxial fans use industry standard foot mounted motors, while most competitor's motors require special shafts and "C" face mounting. That fact makes our products some of the best on the market. In addition, if there is ever a need to replace the motor, these standard motors are readily available and less expensive.