GAF Master Flow GIC12BL Internal Braced Rotary Turbine Ventilator, 12 in, Steel, Galvanized

The GAF Master Flow 12 in. internally braced wind turbine provides superior attic ventilation, reducing heat and moisture buildup to help extend the life of your roof. Constructed from galvanized steel with a sleek black finish, this turbine features a dual-bearing system for long-lasting, smooth operation. Its adjustable base fits roof pitches from 2:12 to 12:12, offering flexibility for various home styles. The extra-large flashing base and mechanically locked two-piece design ensure easy installation and excellent weather protection.

Galvanized steel construction provides durability and rust resistance Black finish for a sleek, modern look that complements various roof styles Internally braced design enhances wind resistance and structural stability Dual-bearing system with upper and lower steel ball bearings for smooth operation Encased bearings prevent dirt, dust, and debris buildup for maintenance-free use Two-piece, mechanically locked design allows for fast and easy installation Extra-large flashing base offers superior leak protection in harsh weather conditions Adjustable base fits roof pitches from 2:12 to 12:12 for versatile installation 120 sq. in. net free area (NFA) ensures optimal attic ventilation Permanently lubricated track system ensures years of trouble-free spinning