Air Vent TIBS0100 Air Hawk Turbine & Base, Black BESTSELLERS 04" (W) x 1

04" (W) x 1

4 solid reversible HSS blades for longer blade life

The dial light is on at all times and is visible in the dark

requires mortise cutout

Pipe size 1-1/4" diameter

Air Vent TIBS0100 Air Hawk Turbine & Base, Black BESTSELLERS 04" (W) x 1Wind Turbines are a type of attic exhaust vent that make up half of a balanced attic ventilation system for each roof. Intake vents make up the other half of the system. Helps to fight heat and moisture buildup inside an attic as well as ice dams in cold climates. Highlights: Color: Black Material: Aluminum Length: 20 inch Height: 18. 4 inch Width: 20. 2 inch Diameter: 12 inch Pitch: 3 12 to 12 12 Net Free Area: 95 sq. inch Vent Type: Wind Turbines