Rand 10 W Solar Battery Powered Attic Fan- Roof Top-Runs at Night!!- 10 Watt

The features of this Rand Solar Attic Fan are as follows:
Always runs on free solar power.
Drastically cuts your cooling bill. Pays for itself in a VERY short time, all while being good for the environment.
High quality and high efficiency Polycrystaline Silicon Solar Panel.
Includes Lithium battery so after sunset, the fan will continue to run off the built-in lithium battery to dissipate any residual heat left in your attic space if the attic is hot.
When fan switch is set to "On", the built-in thermostat will run the fan when the there is sunlight on the panel or the battery is charged, AND the temperature is above 86F.
Heavy-duty High Impact ABS plastic housing is impervious to corrosion, for an extra long life.
Cools up to 775 square feet of attic space with its 525 CFM capacity.
High Efficiency long life brushless motor starts in lower light and overcast conditions.
Whisper quiet operation. You won't even know its running.
Easy roof-top installation will work with almost any roof.
Great for Homes, barns, garages, workshops, etc.
No wiring to perform. Unit is self-contained. Just mount it to the roof and it works automatically.
Entry screen keeps birds, bugs etc. out of your attic.
Approximate overall dimensions are: 17-3/4" L X 17-3/4" W X 5-3/4" H
Approximate dimensions of just the ventilator that sits above the roof line are: 14-5/8" L X 13-1/2" W X 5-3/4" H
Hole diameter that needs to be cut for installation is approximately 11".
Fan blade diameter is 7-3/4".
Includes 20 year parts warranty.