0026715000517

Broan

Model 433

Internet #203481754

16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent

$49.42 /each

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Product Overview

The Broan model 433 automatic shutter is the perfect accessory to Broan gable mount powered attic ventilators, provided you have adequate air intake on the opposite side of the attic or the in the eaves. Attic ventilation is critical to making any home more comfortable while helping to lower energy costs. Stagnant air can be removed, drawing fresh air across the surfaces. The home ventilating institute recommends at least one square foot of open air inlets for each 300 CFM of ventilator capacity.

  • Counter-balanced aluminum vanes open and close automatically with operation of fan
  • Steel reinforced for strength and durability
  • Weather-tight louvers keep attic dry year-round
  • Complete, easy-to-follow instructions for easy installation

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Customer Questions & Answers

11 Questions16 Answers

Customer Questions & Answers

16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent
16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent

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3 answers

Hello, how big will the CUT OUT hole be for this vent?

This question is from 16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent
Asked by
Jarred
September 12, 2012
Product #433 Broan louver
says its 16.75in x 16.75in... i just wanna make sure that when I cut my hole into the side of my house
that I dont cut it to big and the louver just falls through the hole. So i need to know the size of the CUT HOLE in order to make sure the the edges can be screwed down. Thanks
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Answers (3)

Asked by
Louisiana, USA
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January 28, 2014
Answer: 
The vent is about 1/2" smaller than the rough-in size, depending on the type of siding you have and whether you intend to put trim around it, the size in the instructions may work for you. If you only want to run a bead of chalk around it when finished, I would go with 16.5"x 16.5". I made my opening prior to receiving the vent, used James Hardie plank siding, and put a small trim piece around the vent Read More
The vent is about 1/2" smaller than the rough-in size, depending on the type of siding you have and whether you intend to put trim around it, the size in the instructions may work for you. If you only want to run a bead of chalk around it when finished, I would go with 16.5"x 16.5". I made my opening prior to receiving the vent, used James Hardie plank siding, and put a small trim piece around the vent and butted the trim to the siding. Read Less
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Asked by
minnesota
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January 1, 2013
Answer: 
that 16 inch number is with the insulation I think. The pipe is only 12inches. remember this when your cutting the pipe hole
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September 13, 2012
Answer: 
Unfortunately, there is not an easy answer to your question. The installation of this item is more involved than simply cutting a hole and inserting the louver. Please contact customer service at 888-336-6146 and they can email you the complete installation instructions for this item.
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2 answers

Do the louvers go inwards to the attic?

This question is from 16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent
Asked by
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June 11, 2016
Is this an intake vent and do you have it in a 12"x12" or 14"x14"
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Answers (2)

June 13, 2016
Answer: 
Thank you for your questions. The louvers open outwards (to the outside). This is not an intake vent. This would be used with a cable fan that moves air out when in operation. While air is needed inside, this is not the intake. To be sure that your questions are properly answered, I would encourage you to contact our Technical Support Department at 888-336-6151 and speak with them directly. Thank Read More
Thank you for your questions. The louvers open outwards (to the outside). This is not an intake vent. This would be used with a cable fan that moves air out when in operation. While air is needed inside, this is not the intake. To be sure that your questions are properly answered, I would encourage you to contact our Technical Support Department at 888-336-6151 and speak with them directly. Thank you. Read Less
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June 12, 2016
Answer: 
The full installation instructions will be included and are also available on the products page.
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2 answers

Do the louvers operate independently or are they joined with some kind of metal wire device?

This question is from 16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent
Asked by
Redding CT
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April 19, 2016
Do the louvers operate independently or are they joined with some kind of metal wire device? I'd be using these in an unconventional way, on a porch, is why I ask. I'd love it if the louvers were rigged to all work together so I could manually open and close the vents.
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Asked by
Redding CT
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Home Improvement Profile: DIYer
April 25, 2016
Answer: 
Actually, the louvers are NOT joined together and, in fact, operate independently. Thanks to the WRONG answer I got to this question I ordered two of these and now have to return them. Thanks a lot.
Par for the course.
I ordered a window from Home Depot a month ago. Two weeks later it came in broken. They said they'd "rush" out another one. I'm still waiting.
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April 20, 2016
Answer: 
The louvers on the 433 are joined together.
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2 answers

Can I mount this like a gable vent, in that it will open when I turn on my whole house fan?

This question is from 16.75 in. x 16.75 in. Aluminum Automatic Gable Square Mount Louvered Shutter Attic Vent
Asked by
Sacramento, CA
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April 19, 2015
In other words, I want to use it without any ducting, or a dedicated fan to blow it open, just as an attic vent, mounted in a gable, to open when the whole house fan turns on. Thanks!
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Answers (2)

April 20, 2015
Answer: 
Yes, this vent does not need to be connected to a duct.
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April 20, 2015
Answer: 
This unit can be installed for the application you’ve described, however, there probably won’t be enough air flow past the vent to open it when your whole house fan is turned on. If you have any further questions, please contact the Nutone Technical Support Department at 1-888-336-6151.
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