active ventilation 1007 cfm weatherwood powder coated 15 watt solar powered 14 in dia roof mounted attic exhaust fan

active ventilation products aura solar attic fan exhausts air continuously by using solar and wind power for optimum ventilation performance model asf 14 c2 wd has a 15 watt solar panel providing energy to 4 ec fans on sunny days to increase the cfm cubic feet per minute of 1007 of air flow performance it is an excellent choice to exhaust attic heat in the summer to reduce hot attic temperatures it will also exhaust moisture in the winter to keep the attic dry and cool to preserve attic insulation and prevent ice dams the aura solar attic fan will produce 360 cfm at 11 mph without the solar powered fans through its patented engineered design with no moving parts the attic fan is made of durable rust free aluminum and has 5 manufactured components the vent head 4 ec fans 1 solar panel vent collar and square flange it has a 14 in dia throat opening with a 2 in collar height and a 19 in x 19 in square flange the vent head has three concentric cylinders with slotted vertical louvers when air moves against the louvers of the outer and middle cylinders it is directed to create a circular airflow the louvers of the inner cylinder face in the same direction as the air movement created by the outside cylinder this air movement creates a venturi effect which produces a vacuum or negative pressure to pull air from within the attic space