Master Flow® Wind Turbine ‑ Galvanized, Externally Braced 12" ‑ GC12E Specs
Master Flow® Wind Turbine ‑ Galvanized, Externally Braced 12" ‑ GC12E Docs
Master Flow® Wind Turbine ‑ Galvanized, Externally Braced 12" ‑ GC12E Videos

DURABLE
Manufactured with standard and heavy-weight galvanized construction and external bracing

GREAT PROTECTION
Double-ribbed vanes, with convex top, direct wind-driven rain away from the unit

VENTILATES
12" size allows damaging heat and moisture-laden air to escape from the attic, which can help to extend the life of your roof
See the Master Flow® Ventilation Products Limited Warranty for complete coverage and restrictions. The word “Lifetime” refers to the length of coverage provided by the Master Flow® Ventilation Products Limited Warranty and means as long as you, the original owner(s)[or the second owner(s) if coverage was properly transferred] of the Master Flow®Ventilation Products, own the property where the Master Flow® Ventilation Products are installed on a single-family detached residence owned by individual(s). For any other type of owner or building, the length of the warranty is 40 years.
Get automatic Lifetime Protection on your entire GAF roofing system
When you install any GAF Lifetime Shingle and at least 3 qualifying GAF accessories, you'll automatically get a Lifetime limited warranty on your shingles and all qualifying GAF accessories*.
Where to buy
Find a GAF distributor near you.