Air Vent 12-in Aluminum Externally Braced Roof Turbine Vent

Turbine head and base design
95 Square inches of Net Free Area airflow each
Maintenance-free top and bottom dual bearing system
Aluminum construction
Suitable for 3/12 to 1212 roof pitch and has a 12 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