Products / GAF Master Flow Wind Turbines

Master Flow wind turbines are wind-driven roof-mount attic exhaust vents with a stainless dual-bearing system and double-ribbed vanes under a convex top that GAF says direct wind-driven rain away from the unit. GAF lists three versions on separate pages: a 12-inch galvanized turbine with external bracing (standard and heavy-weight galvanized construction), a 12-inch galvanized turbine with internal bracing, and an internally braced aluminum turbine; the two galvanized versions share one wind turbine sell sheet. GAF describes the Master Flow Ventilation Products Limited Warranty as Lifetime for the original (or properly transferred second) owner of a single-family detached home and 40 years for other owners or buildings. The pages list code documents titled "Master Flow Wind Turbine and Aluminum Ridge Vent RV-37" and "Master Flow Static, Power and Turbine Roof Vents RV-38," and the externally braced turbine can be used to comply with certain FORTIFIED Roof requirements in the U.S.