0050206251324

Master Flow

Model # GT12E

Internet # 100019017

Store SKU # 691710

12 in. Galvanized Externally Braced Replacement Turbine Head

$29.00 /each
  • External bracing
  • Galvanized construction
  • Fits most 12 in. turbine bases.

Frequently Bought Together

Product Overview

The 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.

  • Galvanized construction
  • Mill finish
  • Head has heavy-duty steel spider braces for strength and durability
  • Dual-bearing system with encased design helps to prevent dirt, dust, sand, and other foreign materials from damaging the bearing, resulting in a smother spin
  • Permanently lubricated track system of dual bearing system ensures years of trouble-free spinning
  • Fits most other 12 in. turbine brands

Info & Guides

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Specifications

Dimensions

Cut-Out Left to Right Length (in.) 
12 in 
Net-Free Area (Sq. In.) 
120 
Product Depth (in.) 
18 
Product Height (in.) 
11 
Product Width (in.) 
18 

Details

Color Family 
Steel 
Material 
Galvanized Steel 
Paintable/Stainable 
Yes 
Product Weight (lb.) 
7.6 lb 
Returnable 
90-Day 
Screen Included 
No 
Shape 
Round Top 
UV Resistant 
No 
Vent Type 
Wind Turbine 

Warranty / Certifications

Manufacturer Warranty 
Limited Liftetime Warranty 

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Customer Questions & Answers

7 Questions22 Answers

Customer Questions & Answers

12 in. Galvanized Externally Braced Replacement Turbine Head
12 in. Galvanized Externally Braced Replacement Turbine Head

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5 answers

How much wind speed is needed to get it to turn?

This question is from 12 in. Galvanized Externally Braced Replacement Turbine Head
Asked by
mo.
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November 30, 2015
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Answers (5)

Asked by
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May 10, 2016
Answer: 
Not much. A slow breeze spins both of mine.
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Asked by
Peoria AZ
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Home Improvement Profile: DIYer
May 3, 2016
Answer: 
It was very little. I don't know the exact speed but they were turning when some of my neighbors were not. I would guess 5 mph. It will depend on how your house is situated, neighbors house blocking, 2 or 1 story, trees and any other building that might be in the way. I will say they are a good quality and work well.
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Asked by
Boca Raton, Fl
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Home Improvement Profile: DIYer
March 16, 2016
Answer: 
This is an important question!!
Turbines should spin with very little wind speed. If your turbines are not spinning freely they need replacement. If they make noise when spinning replace them as total failure is imminent.
As a Const Tech from BGSU I recommend the externally braced turbines which are better structurally.
Remember a non-spinning turbine is apt to leak easily during any rains, with
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This is an important question!!
Turbines should spin with very little wind speed. If your turbines are not spinning freely they need replacement. If they make noise when spinning replace them as total failure is imminent.
As a Const Tech from BGSU I recommend the externally braced turbines which are better structurally.
Remember a non-spinning turbine is apt to leak easily during any rains, with costly interior damages!!
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Asked by
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December 8, 2015
Answer: 
minimal if adjusted prior to installation.
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December 2, 2015
Answer: 
Thank you for inquiring about MasterFlow Products ... Turbines require 8 mph of wind to get the turbine up to speed to achieve effective ventilation. Please contact our Technical Services Group at 800-211-9612, M-F 8A-5P ET, with any additional questions.
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5 answers

How many do I need and is this okay to use with lots of rain?

This question is from 12 in. Galvanized Externally Braced Replacement Turbine Head
Asked by
Vancouver, WA
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August 13, 2015
I'm hoping to get these for my 1008 square foot one level ranch style house (roof slope is fairly normal). How many of these do I need to properly ventilate my house? The current ventilation is not sufficient.

Also, I live in the Pacific Northwest where it rains pretty much every day during the winter. I haven't seen any of these on other houses and am wondering if they are good to use in this area.

Lastly, what other materials do I need to install one of these? We would be putting a new hole in the roof to install one.
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Asked by
Ladson sc
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June 30, 2016
Answer: 
Most houses at that SqFt would require 2
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Asked by
Peoria AZ
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May 3, 2016
Answer: 
Yes, I have never had any water leak into my attic.
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Asked by
Boca Raton, Fl
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March 16, 2016
Answer: 
Well Pinski, I live in Florida and NOBODY gets more rain and heavier than here and no leaks in ten years. I'd recommend the externally braced units as better structurally.
www.gaf.com/Roofing/.../Roof_Vents/...recommends venting every 300sqft of attic.
If your a DIY'r and confident up on a roof go for it. Remember to install between studs only. Go to u-tube for a installation video for required tools
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Well Pinski, I live in Florida and NOBODY gets more rain and heavier than here and no leaks in ten years. I'd recommend the externally braced units as better structurally.
www.gaf.com/Roofing/.../Roof_Vents/...recommends venting every 300sqft of attic.
If your a DIY'r and confident up on a roof go for it. Remember to install between studs only. Go to u-tube for a installation video for required tools and materials.
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Asked by
Boca Raton, Florida
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August 29, 2015
Answer: 
Generally these are used in areas of heat to vent attics, and you should have two. One will always spin faster than the other. In rainy areas I would vent on ends rather than cut two holes in roof as needed to install roof turbines like these.
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August 17, 2015
Answer: 
Thank you for contacting MasterFlow ... Since this topic requires a more in-depth conversation, please contact our Technical Services Group at 800-211-9612 to discuss this topic. M-F 8A-5P Eastern Time Zone.
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4 answers

Does it have a fan built into the device?

This question is from 12 in. Galvanized Externally Braced Replacement Turbine Head
Asked by
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April 7, 2016
This is probably a dumb question but i am new to the market and was wondering if it had an internal fan that would suck air out of an attic?
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Asked by
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May 10, 2016
Answer: 
no.
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Asked by
Peoria AZ
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May 3, 2016
Answer: 
No they work off the wind. Takes very little wind to turn it. Mine works well. I recommend 1 turbine for every 600 sq. ft.
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April 9, 2016
Answer: 
No, the pitched vanes on the rotating head act as a fan to pull the air out of the attic, when the wind is blowing at least 6 mph. Please call Technical Services at 800-211-9612 with any additional questions, M-F 8A-5P ET.
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April 8, 2016
Answer: 
No, this does not have a fan built into the device.
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3 answers

What is the circumference around the bottom edge of this spinning turbine?

This question is from 12 in. Galvanized Externally Braced Replacement Turbine Head
Asked by
Brooklyn, NY
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April 18, 2016
I'm trying to figure out if I can replace the old head with this one
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Asked by
Las Vegas Nv.
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July 11, 2016
Answer: 
12 inches
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April 20, 2016
Answer: 
Our turbines heads have a 12 inch diameter. Please call our Technical Services Group at 800-211-9612 , M-F 8-5 ET.
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April 19, 2016
Answer: 
The circumference around the bottom edge of this spinning turbine is 12".
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Customer Reviews

Rated 4.0 out of 5 by 63 reviewers.
Rated 5.0 out of 5.0 by Gtrat product I had to drill additional screw holes in my mounting tube because the existing ones did not line up with the screws in the turbine head. No problem. Everything matched up perfectly. I took it down and painted it so it could match the other existing turbines. The installation was very easy and only took a few minutes. The turbine accepted the primer paint very well and the main coats of paint went on very easily. The turbine spins well and quietly when the wind blows which is exactly what I wanted. I'm very pleased with this purchase. June 14, 2016
Rated 5.0 out of 5.0 by very easy replacement My old units had worn out, originally placed in 1970, these units slipped on the existing hardware perfectly. July 11, 2016
Rated 4.0 out of 5.0 by Roof Turbines The turbines work well keeping the attic area cooler and drier June 28, 2016
Rated 5.0 out of 5.0 by quick and easy replacement extremely easy to change old for new. just had to flatten drill holes on one to assure fit. July 5, 2016
Rated 5.0 out of 5.0 by 12 Inch Galvanized Turbine Head - Works Great It was a good price and not available at my local store so it was nice to be able to order it online and have it sent to my store - thanks June 16, 2016
Rated 4.0 out of 5.0 by good purchase Installed 6 days ago, spins well, very smooth even at slight angle (Not completely vertical). Lower profile than previous. Just bought another for the other end of house. May 10, 2016
Rated 5.0 out of 5.0 by replacement turbine head Just what I needed to repair the existing turbine on my shed. Thankfully did not need to remove the whole thing. Just slid this part right on, 3 screws and it was ready for use. So glad one of your employees knew about this product and ordered it for me on line. April 19, 2016
Rated 5.0 out of 5.0 by just what I needed well made. Not much more to say, it's a turbine. easy install April 30, 2016
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