# Master Flow 12 in. Weathered Wood Galvanized Externally Braced Dual-Bearing Wind Turbine

**Brand:** [Master Flow](https://shop.coreranger.com/brands/Master%20Flow)
**Price:** $93.61–$104.04 · in stock
**URL:** https://shop.coreranger.com/product/master-flow-12-in-weathered-wood-galvanized-externally-braced-dual-bearing-wind-turbine-305570715

## Options

- **Color/Finish:** Silver, Weatherwood

## Variants

| Variant | SKU | Price | Stock |
|---|---|---|---|
| Silver | GC12E | $93.61 | in stock |
| Weatherwood | GC12EWW | $104.04 | in stock |

## Specifications

| Spec | Value |
|---|---|
| Bracing | Externally Braced |
| Features | Dual Bearing |
| Material | Galvanized Steel |
| Power Type | Wind Powered |
| Returnable | 90-Day |
| Color Family | Brown |
| Color/Finish | Weatherwood |
| Intake/Exhaust | Exhaust |
| Mounting Position | Roof Mount |
| Product Depth (in.) | 19 in |
| Product Width (in.) | 19 in |
| Product Height (in.) | 21 in |
| Product Weight (lb.) | 9 lb |
| Coverage Area (Sq.Ft) | 500 |
| Manufacturer Warranty | Limited Lifetime Warranty |
| Product Width x Depth | 19 in. x 19 in. |
| Net-Free Area (Sq. In.) | 60 |
| Rough Opening Width (in.) | 12 |
| Rough Opening Height (in.) | 12 |

## Description

The GAF Master Flow externally braced turbines are efficient, easy-to-install venting options for your roof. They allow heat and moisture-laden air to escape your attic, helping to extend the life of your roof. They are designed with upper and lower steel ball bearing systems for years of trouble-free operation. The adjustable base allows for installation on virtually any roof, from 2:12 pitch up to 12:12 pitch.

• Externally braced turbine helps extend the life of your roof
• Durable galvanized construction for smooth and quiet operation
• Peace of mind with Limited Lifetime Warranty