Model # PG2

Internet #100014195

Store SKU #268036

Master Flow 1540 CFM Power Gable Mount Vent in Mill
0050206331583

Master Flow

1540 CFM Power Gable Mount Vent in Mill

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

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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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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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Asked by
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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

1540 CFM Power Gable Mount Vent in Mill is rated 4.2 out of 5 by 117.
Rated 5 out of 5 by from Low amp draw and good air flow for the money. I purchased the Master Flow 1540 CFM Power Gable Mount Vent to today with the idea that I would need to return it based on a few reviews claiming the fan is loud and poorly built. They must have a defective fan or installed it wrong. The fan works fine. I could not find any amp ratings, VA ratings or dB ratings on the fan. So I tested the fan before installing it. At no load (0.SP) it used 186watts @ 124Volts and pulled 1.7 Amps. I could not measure the dB but it is in the range of 75dB to 80dB. I have a high velocity 3-speed indoor fan that is louder. I purchased the fan to use in my 12ft by 10ft greenhouse that required 1440 CFM air change. Running the fan 10hrs per day at 186 watts it will cost about $0.21 cent per day or $6.24 per month to operate. Starting amps was just over 2.5amps. I could later convert this fan to DC with a 200watt dc/ac convertor and a 12v/25amp/hour battery and charge the battery with a solar cell. Specifications on other fans with about the same air flow used 2.5 to 3.4 amps. This fan has the lowest amp draw for about the same air flow. I could have purchase a variable speed fan and lower the amp draw to 1.1 amp but the fan with controller was $268.00. Not enough pay back to spend the extra money. I would recommend mounting the fan face down on a per-cut frame or piece of plywood so that you do not get the housing out of round, then lift the fan into place. This will help eliminate the any vibration after installed.
Date published: 2012-01-19
Rated 5 out of 5 by from Easy Installation, works fine so far I installed it yesterday. It was really simple. I held my trouble light against the thermostat to test it and it worked perfectly. Previous comments complained about the screws hitting the fan...not a problem, I just put notches in each of the fan blades so they could spin freely. ...Just kidding. I guess MasterFlow fixed the issue. My screws were low profile so there was plenty of space. I am happy with the fan and recommend it, especially at $84 (the price in June 2013).
Date published: 2013-06-11
Rated 4 out of 5 by from Started Saving Money AfterThree Months In Sacramento, CA this attic fan costs about $8.00 per month to run 7hrs/day in July 2010 through SMUD. That's $0.26/day. If it trims your $200 HVAC bill by 15% you save $22/mo. in July, ~$20 in June and August. Fan costs $80/$22=3.6 months (#hot months to break even*). After the first hot summer you will pocket at least $60 per summer thereafter. Not including wear and tear on HVAC and added air filters, noise from HVAC. * break even cost assumes proper DIY installation.
Date published: 2010-11-05
Rated 4 out of 5 by from Good so far, requires 16" opening I installed this fan in our attic about 2 weeks ago and it's been running a lot since then due to high temperatures here. So far it's very good. It's mounted to the studs about 3 feet above our bedroom ceiling and the noise level is good. It's quiet, but I can hear it running if I listen carefully, which I like. The only advice I can give is that the brackets that come with the fan require 16" between the studs. I had to swap those brackets with the ones from the old fan to reach the approximately 18" between my studs in the mounting location.
Date published: 2012-07-24
Rated 4 out of 5 by from Cools attic down For my diy instal it took about four hours from start to finnish. The gable for my home was hard to get at. My home actually has one gable in the master bedroom. So only one PG2 attic fan was needed. It readily pulled the heat out of my homes attic space. Set the thermostat too cut off at 105 degrees. On a 80 degree day. The fan had my attic cooled down in about 1.5 hours. This PG2 has sealed bearings on the motor. Maintence free. I almost wish I could oil it. The reveiws have me worried about the fans life span. I also purchased the automatic shutter cover. The cover opens when the fan is running. It's worth the extra money. I live in Georgia. My roof has black shingles. I have had this home for three years. The heat up stairs was so intense. I bought a 12,000 BTU window AC unit to draw the heat out. My central air worked fine downstairs. It would not do any good for the upstairs bedrooms. My hope is the 1540 CFM gable fan will do the trick to off set my cooling cost's. After instalation there was a huge difference in the heat upstairs. It's more then certain that this attic fan will be getting a huge amount of use. List of materials: 1 Master flow 1540 CFM fan 1 2X4 too make frame 1 tube of clear silicone caulk 1 package of 10' piece of 14 gage wire 3 wire nuts 1 Master Gable End Shutter 1 package of 3.5 inch screws Total cost for the job was $154.00 which roughly translates to one months cost to cool my three bedroom home. This fan should pay for itself in about three months. The comfort it will bring during the summer months is PRICELESS...
Date published: 2011-03-23
Rated 5 out of 5 by from These should be in every house!!! This item is awesome. It was very easy to install with just the basic knowledge of household wiring and everyday hand/power tools. Set the built-in thermostat (once it's installed) and forget it. It sucks the hot air from your attic and blows it on the neighors! LOL! It's very quiet, even when you are outside looking up at it. People swear by whole-house fans. But you have to wait for it to cool down outside in order to draw the cool air into your house. Great, but what if it never cools down? I say don't let the hot air build up in the first place. It pays for itself becuase I don't have to turn the A/C on until it gets to 100F+ here. Note, my install was made easier due to the power outlet being very close by to the vent I mounted the fan behind. A no-brainer idea/item.
Date published: 2009-06-27
Rated 4 out of 5 by from Good Value and much quieter I have had two of these installed in my attic for the past 15 years. They are usually on all day every spring and summer and worked great. At almost exactly 15 years, one of them just wore out and failed. I went down to HD and got this latest version and replaced the worn out unit. The old unit wasn't too terribly noisy but the new version is super-quiet. That was a very nice surprise. A few months later, the other one failed so I guess the lifespan you can expect is right on 15 years. I think that is pretty good considering how much mine worked during 2/3 of the year, every year. So, I went down and got another to replace it. These new ones are so quiet, I really can't hear anything from the bedroom right underneath them when they are on. I had to stick my head up in the attic to make sure they were actually working. They are very easy to install and move a lot of hot air out of the attic. It makes a huge difference in the house temperature in the summer.
Date published: 2015-03-24
Rated 3 out of 5 by from mixed results Annual oiling is required. There are little oil port dimples on both sides of the motor. It is a little tricky to get oil into the port on the blind side of the fan. The motor must be installed so the ports are up. I have two fans (two attics), one has never given a problem over a decade, the other has had the motor replaced twice in 5 years. The replacement motor seized but that is probably because it was venting plaster dust for a week of bathroom remodeling. (Take out the bathroom fan and the attic fan vents real well. The fan blades had 1/16" of dust on them.)
Date published: 2010-11-05
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