The good news is that rand fan has a cfm capacity of about 435 and this is why it can cool 700 square feet of the attic space.
Rand 10 watt attic fan.
The fan should have an insect guard as well.
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This solar fan automatically regulates itself.
Rand attic fan is a recommended product and can be graded as the best solar attic fan.
In turn this energy operates a high efficiency motor inside the power vent so there s no added cost for electricity.
When the sun is low in the morning the fan runs slowly.
10 watt solar attic fan.
This solar vent has an attractive design.
This extra high capacity rand solar attic fan provides up to 1274 cfm cubic feet per minute of ventilation and can successfully cool an attic space up to 1813 square feet.
This high capacity fan is great for homes with a large roof area and or poor insulation when you need to be able to move a lot of hot air.