Master MAC-12F 12" High Velocity Fan | Initial Checkout

The initial checkout of a Master branded 12" high velocity fan with ball bearings model MAC-12F. I obtained this by the recommendation of several other collectors, unfortunately my experience with it was not quite so good. Perhaps I have received a defective model. The blade was not properly secured to the shaft right out of the box, and the unit is so out of balance it's as bad or worse than the Air King fans are.
The unit does show some promise though, it has a good range in speeds, the motor runs cool, and with the ball bearings it should last quite a long time. I will inquire with the seller about obtaining a replacement blade, or whole new unit.