Internet #100072633

Store SKU #539250

Master Flow 1600 CFM Power Roof Mount Vent in Shingle Match Weatherwood

Master Flow

1600 CFM Power Roof Mount Vent in Shingle Match Weatherwood

  • 10 Year Parts Limited Warranty; 5 Year Labor Limited Warranty
  • Adjustable thermostat included
  • Effectively ventilates up to 3200 sq. ft. of attic space
$6550 /each
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Frequently Bought Together

Product Overview

The Master Flow Pro3 Power Roof Vent is a great overall investment in attic ventilation. This roof vent removes the greatest volume of hot and/or humid air from your attic, compared to our other models, saving you more in heating and cooling costs. Available in shingle match weathered wood.

  • Helps reduce energy costs and helps prolong the life of the roof and shingles
  • Excellent for roof slopes 3:12-12:12
  • Large pre-punched flashing for easier installation and less chance of leaks
  • Blows hot air outside and cools the attic
  • Galvanized steel construction for durability
  • Heavy-duty metal screen deters animals, birds, and insects
  • Miami-Dade county approved and Texas department of insurance listed
  • Optional humidistat available (H1) - sold separately




Warranty / Certifications

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Customer Questions & Answers

Can this be mounted on a tile roof?

Asked by: CJW815
This product cannot be mounted onto a tile roof.
Answered by: CommunityAnswer
Date published: 2016-07-08

fan is noisy vibrating

is there a method for balancing
Asked by: vern
No method to balance. Contact the manufacturer for a blade or motor replacement. In my experience, their customer service has been very good.
Answered by: Carl
Date published: 2016-06-01

Is the hood also made of galanized steel?

We get large hail where I live.
Asked by: Denny
This is galvanized steel.
Answered by: CommunityAnswer
Date published: 2016-02-01

What is the purpose of having power vents in the winter time?

Asked by: Wondering
To keep the humidity level down. Need to install a humidstat and set to below 70%
Answered by: OHC1949
Date published: 2016-05-09
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Customer Reviews

1600 CFM Power Roof Mount Vent in Shingle Match Weatherwood is rated 4.2 out of 5 by 77.
Rated 5 out of 5 by from Very Reliable I bought and installed one in 2004. I had to replace the motor once but got a replacement from the company with no problem. The only negative is that it would have been nice if the sheet metal screws mounting the motor brackets had been screwed in from the inside. that way it would have been much easier to take the motor out. I had to bend the brackets to get the old motor out. Mine has a lifetime replacement waranty. I see that they are now 10 years. I plan on installing a second one this month. The one I have works great. You do need plenty of eve vents. the more the better. It sure removes a lot of hot air from my attic. I highly recommend.
Date published: 2010-10-03
Rated 5 out of 5 by from This Fan works the best I Installed this Fan in a 24X36 addition with a lean to style roof. Installation took about 2 hours and it was up and running. I didnt have the ceiling installed yet and with out the fan the addition would get really hot to the point you couldnt work. After installation It dramatically reduced the temp in the whole addition. Now with the ceilings up the addition is cooler than the main house. Fan is quiet and really pulls the air through the overhang out through the roof. Havent had any problems but looks like maintenace would be easy to perform if something would go wrong 7 or 8 screws and whole assembly will come out and mounting flange stays in roof. I have no regrets installing this product in my roof.
Date published: 2011-07-17
Rated 4 out of 5 by from Runs quietly but with a little vibration.... Runs quietly but with a little vibration.
Date published: 2017-07-01
Rated 5 out of 5 by from Keeping it cool I have installed two of these master Flow PR3 roof mount fans in my two attics. I prefer this high end one for the longer 10 year warranty and larger volume of air movement. The construction is simple but made from durable gauge galvanized sheet steel. The motor is rated to draw 2.45 amps (this equates to 1/3 hp) and moves air very efficiently. Proper mounting is essential. Using a paint paddle, liberally coat the "entire" back of the mounting flange with roofing tar, about 1/3 gallon and nail securely as recommended in the instructions. (instructions show caulk gun seal) This eliminates vibration and provides quiet operation and extends the life of the motor bearings. Also make sure there is an adequate amount soffit vents for air intake to meet or exceed the fans exhaust air volume of 1600 cfm to minimize strain on the motor. Easy calculations can found on the web. This is usually the biggest oversite with exhaust fan installation.
Date published: 2014-05-30
Rated 5 out of 5 by from Best on the Market! I have been installing these fans for several years now. They are fantastic. I can't help but wonder if the negative reviews about the fan motor dying in 2 -3 years weren't meant for the other models (1000CFM or 12CFM). This Model, the 1600 CFM Pro3 has a much better motor than the other 2 which is why I will only install This model. It did used to have a lifetime warranty and is now 10 years. I have NOT noticed a change in the quality since they shortened the warranty. Also, as another reviewer stated, proper installation is the key. Installation requires going on the roof, lifting shingles, electrical wiring, etc., and therefore should be left to the Pros! For the small difference in price, go with this model, it will last much longer.
Date published: 2011-03-21
Rated 5 out of 5 by from This product is great Just installed this unit on my roof. What a difference it made. I will add a second when it gets cooler out. The instruction say arrow up. It's on the flashing but had to look for it. Holes go toward the ridge. There was no template. Took a piece of cardboard put a hole in it with a nail then took a sharpie at 8.5" from the nail and drew a circle 17" on the box cut it out use the nail in the hole and drive it into the roof. I couldn't reach from inside. If centered in the bay, drill hole at edge and cut. Around the cardboard. Simple! I'm 61 and if I can do it you can!
Date published: 2013-07-09
Rated 5 out of 5 by from Unbelievable !!! It's what the house was missing Basically this house has always seemed to hold in heat pretty well...The winters are great but the summers are horrible. I had to run the AC This year I investigated why our house was "warmer " than other peoples houses. When it reached 80 deg outside it usually meant running the AC...because after about noon the temp inside would be running pace or usually hotter than outside. I went up in the attic when it was about 80 deg outside to survey the situation and put a wireless Thermometer up there. It was anywhere from 100-110 deg when testing. Gathered readings from the attic for about a week , there was not a day where the attic temp was not at least 20 deg or more than the outside temp. From inside the attic I could see there were 3 of those non powered low profile roof vents. After looking at reviews and reading on the net I decided to install the attic fans. Installing the fans as others have mentioned is moderate for the DIY. I actually watched some YouTube videos of some pros and non pros to help me out before I started. I will just say the sawzall is your friend. I noticed when taking off the low profile roof vents , they were full of dirt and dust. Once the fans were installed the temp in the attic is @ or below the outside temp !! What this has done to the inside temp is nothing short of amazing. It was 80+deg outside and the temp on the inside at it's peak was 74 deg.. with no AC that day or the day before. I've never had a temp that low in the house..without running the AC or unless it was less than that temp outside. Wish I would have installed this 6 years would have saved me money on summer electric bills..
Date published: 2011-04-19
Rated 5 out of 5 by from Great, but must be installed right. Many of these are installed wrong, which is likely cause of problems. Make sure you have adequate intake air prior to use. Otherwise you can burning up motor. Use the right size for your attic. You must have more intake (soffits) than exhaust. These amounts can be calculated. Do not mix with other exhaust vents. You are defeating purpose if you have other exhaust methods like box vents, gable vents, or ridge vents. This should only draw air from the soffits or eaves. Air will be drawn from the path of least resistance. So if you have another vent nearby it will cause air, and possibly rainwater, to be sucked in. If you have 2 in your attic in the same open space they should be connected to the same thermostat so they turn on and off at the same time. I called and checked and was told 2 can safely be hooked up to the same thermostat. Check again for yourself by calling manufacturer. Upgrade to humidistat/ thermostat. These are just as important to work in the winter time, by humidity levels. Do not ever cover them up in the winter with plastic bags. Proper ventilation is achieved by air drawn in from the lowest points of the attic and it is exhausted from the highest point in the attic. No openings in the middle. Your winter attic temperature should be within 10 degrees of outside temperature. Good Luck
Date published: 2010-01-21
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