0050206331583

Master Flow

Model PG2

Internet #100014195

Store SKU #268036

1540 CFM Power Gable Mount Vent in Mill

$84.00 /each
  • 5 Year Parts Limited Warranty; 3 Year Labor Limited Warranty
  • Adjustable thermostat included
  • Effectively ventilates up to 2400 sq. ft. of attic space

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Product Overview

Master Flow Gable Mount Attic Ventilators are a great choice for exhaust ventilation. They are the easiest power vent to install and won't detract from the appearance of your roof. They can quickly remove a larger volume of hot and/or humid air from your attic, compared to static ventilation and can save you money on your heating and cooling costs. The PG2, Power Gable Mount Vent in Mill finish can move air at a rate of up to 1540 cu. ft. per minutes. The recommended attic size for peak performance is 2400 sq. ft.

  • Mounting brackets included for installation
  • Mounts inside your gable inside the attic
  • Helps to reduce energy costs and helps prolong life of the roof and shingles
  • Blows hot air outside and cools the attic
  • Galvanized steel construction for durability
  • Optional humidistat available (H1) - sold separately

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Customer Questions & Answers

15 Questions34 Answers

Customer Questions & Answers

1540 CFM Power Gable Mount Vent in Mill
1540 CFM Power Gable Mount Vent in Mill

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4 answers

Can this unit be mounted to blow air into the attic?

This question is from 1540 CFM Power Gable Mount Vent in Mill
Asked by
Houston, Texas
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October 3, 2015
I'm short on roof venting and my contractor has recommended a "push-pull" arrangement with one fan blowing in and the other extracting air out the other end. Can this be done?
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Answers (4)

October 6, 2015
Answer: 
Thank you for contacting MasterFlow ... This process is not recommended. It is not efficient to use two fans where one can perform the job and you would have to run two fans from one thermostat, which also is not recommended. Please call Technical Services Group at 800-211-9612, M-F 8A-5P EDT to get any additional information needed.
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Asked by
Houston, Texas
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Home Improvement Profile: DIYer
October 4, 2015
Answer: 
Thanks for the concern with synchronizing the two units K... I'm thinking to use only one thermostat on the inlet fan and run a second pair wire to the other fan. Single thermostat control for both units? Do you think this would be okay? /hotinhouston
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Asked by
Northfield, NJ, USA
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Home Improvement Profile: DIYer
October 4, 2015
Answer: 
if you could somehow reverse the fan blade orientation. you do not want to expose the motor to moisture as it is not weather proof
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Asked by
Sacramento
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Home Improvement Profile: DIYer
October 4, 2015
Answer: 
These units come with a thermostat. Since the air temperature differs from inside and outside the attic it would be very difficult for two units to run in sync. I installed mine in 2007 and has run great ever since. I would install one exhaust only. If you feel it's not working for you I would see about getting more vents. I have a remote temperature gauge in my attic. The hottest I have ever seen up Read More
These units come with a thermostat. Since the air temperature differs from inside and outside the attic it would be very difficult for two units to run in sync. I installed mine in 2007 and has run great ever since. I would install one exhaust only. If you feel it's not working for you I would see about getting more vents. I have a remote temperature gauge in my attic. The hottest I have ever seen up there is 122F on a toasty summer day of 107F. Read Less
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4 answers

Best Installation Mounting

This question is from 1540 CFM Power Gable Mount Vent in Mill
Asked by
St.Louis MO
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August 29, 2015
I have the rectangular gable vents similar to the ones in some of the photographs.
Is it better to mount the fan to a piece of plywood and completely seal around the exterior of the fan shroud? .....or is it better to simply mount the fan in front of the gable vent?
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Asked by
Durham NC
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Home Improvement Profile: DIYer
June 25, 2016
Answer: 
I have a fixed-slat gable vent made from wood, and it's covered with an aluminum screen to keep insects and hopefully bats out. As a result, I was disappointed with how much back flow there was. That is, there was a substantial amount of air blowing from the sides back into the attic. So I sealed around the exterior of the shroud. I'm sure that increased the back pressure and reduced the efficiency of Read More
I have a fixed-slat gable vent made from wood, and it's covered with an aluminum screen to keep insects and hopefully bats out. As a result, I was disappointed with how much back flow there was. That is, there was a substantial amount of air blowing from the sides back into the attic. So I sealed around the exterior of the shroud. I'm sure that increased the back pressure and reduced the efficiency of the fan somewhat, but I already had reduced efficiency from the vent itself anyway. Regardless, it's working as well as it could at this point. I just finished the installation today so I'll be able to tell how much difference it makes soon.
PS with respect to some other questions: I agree that this fan is surprisingly quiet and has essentially no vibration under normal operation. I had bought rubber bushings for the purpose, but mounting it directly to a wood frame resulted in a very solid look and feel. Read Less
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August 31, 2015
Answer: 
Thank you for contacting MasterFlow ... Since most gable vents will not allow the full capacity of the air generated to pass through the louvers, it is recommended to offset the installation of the fan 1 1/2 to 2.0 inches. The model# SGM20 Automatic Shutter will allow full air flow when mounted as directed. Please call Technical Services at 800-211-9612 with any additional questions.
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Asked by
Northfield, NJ, USA
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August 31, 2015
Answer: 
(for me) I simply installed the fan to the frame of the gable vent frame. The tiny bit of the fan housing that overlapped the inside of the attic wall was negligible. I would highly recommend using an old bicycle tire inner tube to create a vibration damper between the tabs on the fan frame and what ever wall or wood frame you attach this onto. just wad the cut tube to make several folds and you will Read More
(for me) I simply installed the fan to the frame of the gable vent frame. The tiny bit of the fan housing that overlapped the inside of the attic wall was negligible. I would highly recommend using an old bicycle tire inner tube to create a vibration damper between the tabs on the fan frame and what ever wall or wood frame you attach this onto. just wad the cut tube to make several folds and you will reduce any fan noise substantially Read Less
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Asked by
Sacramento
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Home Improvement Profile: DIYer
August 31, 2015
Answer: 
I installed mine in 2007 and it's worked untouched since. I don't think sealing it or not would make any difference in performance. I installed mine directly on the gable frame but at a slight angle downward to better match the angle of the vents. I found this to reduce the backwash of the air being drawn out.
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3 answers

Can I set this fan up to continuously blow air?

This question is from 1540 CFM Power Gable Mount Vent in Mill
Asked by
CA
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May 4, 2016
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Asked by
Antioch
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May 6, 2016
Answer: 
yes, sort of, if you set the thermostat to the lowest setting which is usually unattainable during hot hours in your attic, except during cool nights .
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Asked by
Lake Mary Fl
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Home Improvement Profile: DIYer
May 6, 2016
Answer: 
Yes you can, you just have to by pass the thermostat or take it out of the circuit. The life span maybe greatly reduced by not having the on/off cycle.
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May 5, 2016
Answer: 
Yes, you can wire this for 100% run time.
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3 answers

Is vibration / noise normal?

This question is from 1540 CFM Power Gable Mount Vent in Mill
Asked by
Lake City, Fl.
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April 26, 2016
Mounted it in my shop less than a week ago. It works fine but the motor/fan assembly is vibrating the shroud to a great extent and it is VERY noisy. I fear that the vibration will end up loosening the bolts that attach the motor/bracket to the shroud or that the metal will fatigue and crack. Is this normal?
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Asked by
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April 27, 2016
Answer: 
No, I have mounted several of these and I have never had excessive vibration or noise. The only thing I can think of is that the arms that hold the motor are loose. Besides that, you probably have a bad unit.
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Asked by
Lake Mary Fl
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April 27, 2016
Answer: 
I would have to say no to the extent that you are describing. I installed mine a few months ago and it is no where near as bad as you described. I would suggest going back for a replacement. It could be a dangerous situation waiting to happen. If the fan (or motor) is out of balance at that RPM could be bad. If the motor fan assembly is lose or not together properly could be bad.
Return it and get
Read More
I would have to say no to the extent that you are describing. I installed mine a few months ago and it is no where near as bad as you described. I would suggest going back for a replacement. It could be a dangerous situation waiting to happen. If the fan (or motor) is out of balance at that RPM could be bad. If the motor fan assembly is lose or not together properly could be bad.
Return it and get another one.
Read Less
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April 27, 2016
Answer: 
Vibration and excessive noise is not normal. If there is not enough air intake ventilation (min. of 700 sq inches of NFA intake) this can cause blade cavitation (vibration and noise). Please call Technical Services at 800-211-9612 for additional information, M-F 8A-5P ET.
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Customer Reviews

Rated 4.2 out of 5 by 117 reviewers.
Rated 5.0 out of 5.0 by Mounted it Vertically Here are some shots of the (Gable) Attic/Garage Fan that I installed in my attic above the garage. My main goal was to cool down the garage on hot summer days. It gets to be over 100 degrees. God knows what it is like in the attic above the garage. Probably 130-180? I calculated that I need appx. 400CFM to cool down the garage. The fan is a 1650CFM gable fan. The fan is 15 inches in diameter. So I was able to run two 6” semi-flexible ducts off of it comfortably. One to go to the ceiling of the garage and the other to a little shy of the attic floor with an elbow. (I did not want it to suck out the loose insulation from the attic and blow it all over the neighborhood). I figured with all of the restrictions that should about do it around 800CFM and less each duct. I mounted a 6” under eve vent in the ceiling of the garage between the door opener and a light. I mounted the gable fan vertically to vent out the ridge roof vent and not horizontal as it was designed. In order to make it quieter, reduce the vibration and seal off superfluous air flow, I slit a piece of ¾ “ caulk saver foam ½ way through and silicone mounted it to the top and bottom of the fan. The fan is completely enclosed and baffled to direct all the air out the ridge vent and not blowing around in the attic. The fan is mounted to a ¾” 2’x2’ piece of plywood, while the baffles are 1/2” plywood. All of the cross members are mounted on plain old 2x4’s. This was an easy approach as the roof joists are on 24” centers. Power was easy to get to, I just ran a line from the single duplex box that the garage door opener was plugged into. The fan draws less than 4 amps so I ran 14/2 Romex to an switched (on/off) cover plate that I installed a 15amp circuit type fuse. This way I can always shut it off if I need to and if the circuit breaker trips, I can always reset it after determining the problem. So in testing it, it runs great and quite with very little vibration. The draw at the ceiling can support and empty plastic garbage. Maybe I have to put in some vents in the garage door for make-up air or just open it a little so it does not suck the cool air out on the house. I can also add dampers to the 6” extensions to throttle down the draw but I would rather like to run full throttle open. So in conclusion, I set the thermo for 100 degrees and we shall see what happens. Enjoy the pics!!!! February 28, 2016
Rated 3.0 out of 5.0 by So far so good Fan was packaged well and there were no defects visible. Installation was easy enough. After install I went to turn the fan on and it wouldn't start. Found the thermostat was stuck and after a sharp rap with the end of the screwdriver it started to work. A little worrisome on that front but it seems to be working fine. There is a squeaky noise that you can hear from outside but the overall noise inside is negligible and the fan is installed over my bedroom. It is a good value for the money considering the amount of air it moves and the low amperage it is rated. I would buy another. May 24, 2016
Rated 2.0 out of 5.0 by Not Good It came bent so when it started it made all kinds of racket. Cheaply made. May 24, 2016
Rated 5.0 out of 5.0 by Quik shipping. This attic fan was fairly easy to install. Just followed the instructions and did not have any problems. My attic is now kept at a normal temperature. It really blows out the hotness in the attic. I am very pleased with is product. May 17, 2016
Rated 5.0 out of 5.0 by Great Purchase This was the perfect fit for what we needed without the hassle. May 18, 2016
Rated 5.0 out of 5.0 by Easy To Install & Priced Right We've been intending on purchasing this for some time now. We finally did and are very happy with the fan. Now granted, this is only our first night with the fan, but we do notice the difference already. 1. The fan is not tough to install. You will need to provide your own screws for mounting though. Easy enough to use the screws of your existing attic fan. It takes about 30 minutes. RECOMMENDATION: If you are installing this fan during spring or summer, do as much of the assembly as you can before going into the attic. Your attic is probably hot, and wherever you can assemble it (by not being in the heat) will probably be better. 2. The fan runs quiet. 3. We installed the fan at 6:00 pm (in the summer) and the temperature was over 100 degrees in the attic. By 11:00 pm, the temperature was down to 80 degrees. Withing a couple of hours the temperature was down to 90 degrees. The attic was bearable again! Not too sure why we did not purchase this sooner. I am guessing that our A/C cost be reduced. This is just night #1 so we shall see. I would recommend this attic fan and I hope your experience is as flawless as ours! July 28, 2015
Rated 5.0 out of 5.0 by Great Gable Vent Fan I used this to replace one that was at least 35-40 years old and the thermostat had broke and the fan was noisy. Happy to report the new one runs great, makes a huge difference in the heat and moisture in my attic I don't hear it at all and helps bring the house temp down. I started to monitor it after our home seemed much hotter than before. That was when I realized the old fan had stopped working and we had some really high attic temperature readings 130 degrees and up range. Since putting it in the highest tempurture reading has been 118 degrees. The fans set to turn on at 105. I would suggest installing early in the morning, or on a cool day if you can. I wanted to get it in and running so I just did it. Setting up another fan to give you some air relief while you work could be a good idea. I think I lost 5 lbs installing it as it was really hot in the attic the day I did it. Installation was easy ,the hard part was just moving around and working in the attic. I would say it took me about 1 hr to install. June 10, 2015
Rated 5.0 out of 5.0 by fan work well The fan works well to cool the attic. Works great. April 5, 2016
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