14" superior internally braced wind turbine attic exhaust vent. Aluminum construction. Premium grade upper and lower stainless steel ball bearings with integrated molded shield to protect bearing raceway. Dual ball bearings - adjusts to 12/12 pitch. Premium bracing system engineered for high wind resistance. Tested to ensure durability and performance in extreme temperatures and high winds. This exhaust vent requires adequate soffit intake vents. Includes: Base and riser. Lifetime limited warranty. No. CX14IBALMIL: Size: 14", Material: Aluminum, Color: Mill, Type: Internally Braced, Roof Pitch: Up to 12/12 No. CX14IBALBLK: Size: 14", Material: Aluminum, Color: Black, Type: Internally Braced, Roof Pitch: Up to 12/12 No. CX14IBALBRN: Size: 14", Material: Aluminum, Color: Brown, Type: Internally Braced, Roof Pitch: Up to 12/12 No. CX14IBALWG: Size: 14", Material: Aluminum, Color: Weathered Gray, Type: Internally Braced, Roof Pitch: Up to 12/12