• Always runs on free solar power. If the Sun is shining on the solar panel, the fan will be spinning..
• Drastically cuts your cooling bill. Pays for itself in a VERY short time, good for the environment..
• Ventilates up to 700 square feet of attic space with its 435 CFM capacity. For installations with larger space or higher heat load, you can install more fans or use one of our larger 30W or 40W rooftop fans..
• High Efficiency long life brushless motor starts up even in lower light and overcast conditions. If you are looking for a fan that will run at night, check out our 10W and 30W fans with battery backup..
• No wiring to perform. Unit is self-contained. Just it to the roof and it works automatically. If you are looking for a fan that will allow you to adust the solar panel angle, check out our larger 30W and 40W rooftop fans..

NEW Rand 8 Watt Solar Attic Fan With this high quality attic fan, you will dramatically cut your cooling costs in the summer. Your attic can get hotter than 160 degrees in the summer. This heat works its way into your house, and makes it more difficult to cool it in the summer. With this attic fan, you can cool your attic temperatures by up to 50 degrees. In the spring and fall, you may not need air conditioning at all! In the summer, it will dramatically decrease the a of time that your air conditioning needs to run. And, since it is all powered by the sun, you will get these benefits at no cost to you! It also provides needed ventilation to decrease moisture and water vapor in your attic. This, combined with the decreased attic temperature, can increase the longevity of your entire roof system. This compact fan is great for small spaces. Or, for larger spaces you can add more fans to get the job done. This fan is great for sheds, greenhouses, campers, boats, covered patios, dog houses, chicken coops, etc. The features of this Rand Solar Attic Fan are as follows: 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. It's designed to withstand heat, wind, hail, and UV Light. Cools up to 700 square feet of attic space with its 435 CFM capacity. High Efficiency long life brushless motor starts in lower light and overcast conditions. Whisper quiet operation. Easy roof-top installation. Approximate overall dimensions are: 17" L X 17" W X 4.75" H Approximate dimensions of just the ventilator that sits above the roof line are: 13.5" L X 13.5" W X 4.75" H Hole diameter that needs to be cut for installation is approximately 11". Fan blade diameter is 9". Includes 20 year parts warranty.