Model # GT12E

Internet #100019017

Store SKU #691710

Master Flow 12 in. Galvanized Externally Braced Replacement Turbine Head
0050206251324

Master Flow

12 in. Galvanized Externally Braced Replacement Turbine Head

  • External bracing
  • Galvanized construction
  • Fits most 12 in. turbine bases.
$2900 /each
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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

Details

Warranty / Certifications

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Customer Questions & Answers

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

Asked by: cb
Barely any. There was a slight breeze when I was installing mine and the turbine was already moving.
Answered by: DillieO
Date published: 2017-04-26

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

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.
Asked by: pinski75
First rain mine encountered, it leaked like crazy! Seems to be poorly designed. It's too flat, not enough slope for the rain to runoff, and no type of seal to keep water from entering at the top and running down the main shaft. Stay away!
Answered by: Scooby
Date published: 2017-01-03

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

I'm trying to figure out if I can replace the old head with this one
Asked by: Tony
The circumference is calculated by multiplying the diameter 12" by PI (3.1416) = 37.699"
Answered by: Tulspar
Date published: 2017-06-19

Does it have a fan built into the device?

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?
Asked by: jonsmith
The heat from your attic makes the turbine spin and it pull the heat out of your attic
Answered by: Jack9055
Date published: 2017-04-29
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Customer Reviews

12 in. Galvanized Externally Braced Replacement Turbine Head is rated 4.1 out of 5 by 118.
Rated 5 out of 5 by from If you need to replace a whirlybird and not the base, this is perfect. The only annoying part was... If you need to replace a whirlybird and not the base, this is perfect. The only annoying part was leveling it. When one angle was leveled, we moved the leveler and it was off. There's probably a better way to that. We drilled two new holes since the existing holes in the base didn't all match up. Total install time was maybe 45 minutes which includes removing the old bird.
Date published: 2017-04-04
Rated 2 out of 5 by from The bottom of the vent was out of round and the top bearing was out of its position. Easy fix. I ... The bottom of the vent was out of round and the top bearing was out of its position. Easy fix. I hammered out the bent area and reinstalled the bearing. I looked the vent over very good and I'm glad I did or otherwise Id never noticed the bearing being out of place. Took 10 minutes to install. This was a replacement vent the other blew off and the lady wanted it replaced. Cant imagine how these vent wont leak? Been in Roofing business in Phila for 45 years an I have problems with this type of vent. I would not recommend this type of vent nor put one on my own roof.
Date published: 2017-04-25
Rated 4 out of 5 by from The Master Flow turbine head arrived promptly at Home Depot, fit very snugly and had to drill thr... The Master Flow turbine head arrived promptly at Home Depot, fit very snugly and had to drill three new holes for mounting the unit. It has survived plenty of wind this spring with no noise or rumbling. I see no way to lubricate the turbine if it starts whining or bearings get worn. A new unit would again be the only solution.
Date published: 2017-06-11
Rated 5 out of 5 by from The turbine head was an exact fit on the existing flashing. The screw holes were an exact fit. T... The turbine head was an exact fit on the existing flashing. The screw holes were an exact fit. Took about 15 minutes to replace. Replacing the old turbine head with this one stopped the leak. If your flashing is in good condition, this is a very easy fix. Recommend.
Date published: 2017-04-18
Rated 5 out of 5 by from Just what I was looking for I just wanted to replace the top part of my whirlybirds without doing a roofing project, these were exactly what I was looking for. Super easy bolt on, fit perfectly over my existing base. It took more time to climb up the ladder than to install these. Recommend.
Date published: 2017-05-30
Rated 5 out of 5 by from The Master Flow turbine head works great and was relatively easy to install. I thought that I had... The Master Flow turbine head works great and was relatively easy to install. I thought that I had purchased the wrong one (external/internally braced), not knowing much about turbines, but I only had to drill new screw holes to make it work.
Date published: 2017-02-02
Rated 5 out of 5 by from Turbines I purchased 2 but only needed 1 that stopped rotating, but decided to get 2 so they would match, They seem to rotate smoothly and are very quiet..My Brother said they were Easy to install..I would definitely recommend them.
Date published: 2017-07-05
Rated 1 out of 5 by from Not worth saving the $8 vs the alternative. The item actually arrived broken and when I looked a... Not worth saving the $8 vs the alternative. The item actually arrived broken and when I looked at the bearings they appeared to be cheap plastic. Not worth my time. I immediately returned for the far superior Whirlybird.
Date published: 2017-05-23
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