Air Vent AirHawk Turbine (14 Internal Brace Mill Finish)Features. Height213 in Diameter14 in. colorMill. MaterialAluminum. Pitch312 to 1212. Vent TypeWind Turbines. UV ResistantYes. Screen IncludedNo. Wildlife guardNo. Shapecircle. Paintable or StainableNo. Net Free Area132 sq in. Maintenance free top and bottom dual bearing system. Turbine head an..

Air Vent AirHawk Turbine (12 Internal Brace Weather Wood)This Internally Braced Aluminum Turbine is Weather Wood Finish With Heavy Duty Rust Free Polypropylene Bracing System To Be Used On Roof Pitches 312 1212 To Ventilate Attics Up To 750 SQFT Miami Dade TDI Approved cfm Varies With Wind Speed Specifications. Size 12 in. country of Origin United ..