Rand Solar Powered Attic Fan-5 Watt-W Roof Top Ventilator NEW!!

This Rand Solar Attic Fan provides up to 200 CFM (cubic feet per minute) of ventilation, and can successfully cool an attic space up to 320 square feet. This compact fan is great for small spaces. Or, for larger spaces you can add more fans to get the job done. This fan will cool your space cheaper, easier, and more effectively! This Solar 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. 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. Heavy-duty High Impact ABS plastic housing is impervious to corrosion, for an extra long life. 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. See a sample installation video here: http://www.thisoldhouse.com/toh/video/0,,20047003,00.html This makes a great do-it-yourself project, or, if you are uncomfortable doing the work shown in the video, just about any competent roofer or carpenter can do it for you. 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: 13.75" L (13.75" is the mounting flange size) X 13" W X 3.4" H Approximate dimensions of just the ventilator that sits above the roof line are: 9.75" L X 8.6" W X 3.4" H Hole diameter that needs to be cut for installation is 7". Fan blade diameter is 5.75". Please refer to the video above for installation instructions. Includes 5 year parts warranty.