Top critical review
The speed control is almost useless. About 75% of the knob's range does nothing ...
October 25, 2017
The speed control is almost useless. About 75% of the knob's range does nothing at all, then towards the end of the turn it will bump up the speed very slightly and then does nothing again until it switches the fan off. I would have been better off buying a separate speed control from Harbor Freight and a cheaper fan without this useless control.
I gave it 3 stars because the fan itself seems to be working ok. It's not too loud, most of the noise is from the air movement itself. It also seems to move as much or more than the rated cfm, much better than the shoddy inline 6" vent fans at Home Depot anyways.
*The company has refunded my money now so it's all good.