Review on High-Performance Air King 9312 Multi-Mount Wall Fan for Efficient Airflow in Black Powder-Coated Steel Design by Tiffany Correa

A fan would be a great fan but for some reason one of the blades is heavier than the other two causing it to vibrate a lot. I even manually lifted a heavy fan blade when the fan wasn't running and the weight would make it spin and land on the ground every time. If I had kept the box I would have sent the fan back. I am using an 8 x 12 greenhouse fan made from 2 x 4's and the center board where the rafters connect at the top is a 2 x 8 which has the fan mounted on it. The vibration is so strong that the plants on the tables attached to the walls of the greenhouse shake at any speed. I think maybe this vibration can be beneficial in the sense that it can make plants harder and stimulate growth.