Air Vent 20.2 in. H X 12 in. L X 12 in. D Mill Aluminum Brace Turbine

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.

• 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 inch opening