Turbine head and base design. 132 Square inches of Net Free Area airflow each. Maintenance-free top and bottom dual bearing system. Aluminum construction. Suitable for 3/12 to 12/12 roof pitch and a 14 inch round opening for optimal airflow. Part of a balanced attic ventilation system for year-round airflow. Limited Lifetime Warranty. Helps to fight heat and moisture buildup inside an attic as well as ice dams in cold climates. Use the Lowe's online calculator to determine how many are needed for each attic.

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Air Vent 14.0-in Aluminum Internally braced Roof Turbine Vent

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