The Air Vent Wind Turbine comes with a 12 inch opening and 95 sq. inches of NFA. It is Miami-Dade approved. A non-electric alternative to ventilation, these vents use the natural force of wind and air pressure to spin and vent out stale attic air. They do it with a series of specially shaped vanes that catch the wind and provide rotary motion. This pulls hot, humid air from the attic. Turbine vents provide a low-cost ventilation alternative in areas where wind speeds of at least 5 mph are typical.
A guideline to keep in mind with the Air Vent Air Hawk is that homes require 1 square foot of net free area (the total unobstructed area through which air can enter or exhaust a non-powered vent) for every 150 square feet of attic floor space. If balanced between intake and exhaust vents, the requirement is 1 square foot of net free area for every 300 square feet of attic floor space.
- Dual ball bearing system assures long-lasting quiet operation
- Multiple roof vents are usually needed to provide the required net free area
- Must be spaced equally over the roof to provide sufficient airflow along the entire roof sheathing
- Like roof vents, turbines must always be used with adequate soffit venting to meet minimum ventilation code requirements
- Homeowners should not be instructed to cover turbines in the winter because that would prevent the needed ventilation
- Two-piece base
- Large flashing allows for easy installation
- Aluminum construction
- NFA (square inches): 95/pc
- 12" opening
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