Ventamatic 12" Standard Externally Braced Galvanized Wind Turbine

12 standard externally braced wind turbine attic exhaust vent. Galvanized steel construction - mill finish. Co-polymer bearing system for quiet, long lasting, and smooth operation - adjusts to 6 12 pitch. Tested to ensure durability and performance in extreme temperatures and high winds. This exhaust vent requires adequate soffit intake vents. Requires 432 sq. in. of NFA Net Free Area . Includes Base and riser. Lifetime limited warranty.WARNING This product can expose you to chemicals including Chromium which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information visit

12''. Constructed with components designed to meet or exceed industry specifications and standards. DuPont Delrin bearing system for quiet, long lasting, and smooth operation. Raceways fully machined to deliver low drag and quiet operation. Tested to insure durability and performance in extreme temperatures and high winds. Adjustable to a 6/12 pitch. 2 turbines will ventilate 1300 sq. ft. Limited lifetime warranty. No. CX12IBGVMIL: Galvanized, internally braced No. CX12EBGVMIL: Galvanized, externally braced No. CX0012WSM: Aluminum, internally braced No. CX0012WSB: Brown aluminum, internally braced No. CX0012WSBLK: Black aluminum, internally braced No. CX0012WSG: Weathered gray aluminum, internally braced