This extra high capacity Rand Attic Fan provides up to 1792 CFM (cubic feet per minute) of ventilation, and can successfully cool an attic space up to 2800 square feet. The solar panel includes adjustable angle bracket so you can dial in the optimal panel angle relative to the sun. This way you will get maximum performance of this attic fan.
This Attic Fan automatically regulates itself. When the sun is low in the morning, the fan runs slowly. As the Sun gets higher in the sky, your fan will automatically speed up to dissipate the extra heat. So, during the hottest part of the day, your fan is running at its fastest speed. And at night, it automatically shuts off. In addition, we include an 85 degree thermostat already installed! It will turn on the attic fan anytime your attic is above 85 degrees and there is sun shining. This greatly increases the life of the attic fan because it will not run when it is not needed.