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Master Flow

Model # PG3X

Internet # 100088166

Store SKU # 268090

1600 CFM Power Gable Mount Vent in Mill

This item has been discontinued.
The Home Depot no longer carries this specific product.

$112.00 / each

  • 10 Year Parts Limited Warranty; 5 Year Labor Limited Warranty
  • Adjustable thermostat included
  • Effectively ventilates up to 3200 sq. ft. of attic space


Model # PG3X

Internet # 100088166

Store SKU # 268090

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 PG3X, power gable mount vent in mill finish can move air at a rate of up to 1600 cu. ft. per minutes. The recommended attic size for peak performance is 3200 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
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Cut-Out Diameter (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Airflow (CFM) 
Amperage (amps) 
Color Family 
Color/Finish Family 
Galvanized Steel 
Power Type 
Product Weight (lb.) 
15.2 lb 
Reccommended Sq. Ft. 
Ventilation Type 
Voltage (volts) 
Wildlife Guard 
Warranty / Certifications
Manufacturer Warranty 
10-year Parts Limited Warranty 5-year Labor Limited Warranty 


Rated 4.3 out of 5 by 60 reviewers.
Rated 5.0 out of 5.0 by Surprisingly Quiet Purchased the Model # PG3X 1600 CFM for my 2 story house. During the summer, my attic can reach well over 100 degrees. This generally causes the rooms on the second floor to get rather toasty and the AC starts up sooner and remains on longer for the second floor. Hopefully, this fan can keep the attic temperature at bay. Installation was easy with a little bit of electrical know-how and some wood work. I mounted it to some OSB and built essentially a box with some 2 by 3s to direct the airflow out through the gable vents. Sealed all the gaps with some standard window chalking and applied High-Density Rubber Foam Weatherstrip (Model # R516H) around where the OSB and 2 by 3s are screwed together. This creates an airtight seal as well as absorbing any vibrations being transferred down the walls. Also wired a switch down to the hallway to manually turn off the fan for whatever reason. It is super quiet and can only be heard if I am in the attic. May 22, 2015
Rated 4.0 out of 5.0 by evaluating performance I installed this Power Gable Vent 1 week ago and the product is operating smoothly. I am going to evaluate its performance over the next two months or until the hot weather breaks; whichever happens first. I will then post my results here. I realize that a comprehensive comparison might take up to 6 - 9 months but if the product performs as it says it will, (and as well as others have said it will), then I should see positive results in energy used to cool my house, how often the current system cycles on / off, etc. The fan installed easy enough. I used a section of 1/2" b/c plywood (2' x 2') with a diameter hole cut-out equal to the diameter of the fan housing, (about 15.5"). My frame was (2) vertical 2' x 4' flat side down against the plywood 24" apart OD, (see photo). I will add 2 horizontal pieces to block-in. I used 2" wood screws to attach to T1-11 (both sides) to pull up tight. I wired into an existing 20 amp line using 12-2 romex. Helpful hint; if you are working by yourself a pulley mounted into soffet rafter can be a handy way to ease louver up to your position. August 27, 2014
Rated 5.0 out of 5.0 by Excellent Fan I purchased this fan from Home Depot because I had a similar fan from the same Company years before. My old fan quit working after years of service and I never had a problem with it. The installation was easy because I already had the wiring done. My attic is very small and its hard to move in the small space. I found that if you remove the three bolts from the Shroud the Motor & Fan Blades come out. (Do not drop the Motor & Blades for this will bend them and cause vibration) The unit is now much lighter and therefore easier to screw to the Gable. Once you have the Shroud in place you install the Motor & Blades back into the unit. Make sure the three bolts are tight and then connect the wiring. I am sure it will be years before I need another fan because the old Master Flow lasted for yeas. July 16, 2013
Rated 4.0 out of 5.0 by Lasted About 15 Years Taking mine out of attic for replacement, product label has June 1999 stamp on it, so at the most we got nearly 16 years use. It started making sounds about 3 years ago, and failure came as very loud squeaks followed by a frozen motor. Decent value for the price. I had thought we had it for 20 or more years, and expected 20 years of use given that it doesn't run all that much of the year and it is a simple fan motor, so 20 years is what I view as normal life. April 18, 2015
Rated 5.0 out of 5.0 by A great way to save some money on your Utility Bills This is the second attic fan I have purchased in the past 8 years. The difference having one installed and working correctly makes a $10-15 dollar per month difference on my electric bill. It is well worth the investment!!!! June 23, 2015
Rated 5.0 out of 5.0 by wow works great It has been very hot here. My air was not shutting off and it was still hot in my house. I have a new air conditioner and it was working over time. I bought the fan bought the extra conduit and hook it up before I went in the attic – it took me 5 minutes to mount and 15 to tap in to the out let that was there. Wow my air shuts off now. In myy house its nice and cool / cold to my wife the noise it’s not bad it sound like a far way fan I did not notice it my wife did. Not bad for a do it yourself I has always scared to work with electric but the guy at home depot covered the steps and helped me pick out what I needed and it was a snap. July 26, 2010
Rated 5.0 out of 5.0 by Works like a champ! Overall the installation process was very easy. I have a steep roofline which made it difficult carrying the necessary tools to the work site. I recommend checking the fan to ensure it's operation prior to installing it and finding out it doesn't work. It doesn't take lone to start sweating up there. Everything you need is found in the electrical aisle (14/2 25 to 50 ft wiring & self made plug). After reading all the reviews on this fan, I'm happy that I purchased this one. IT MAKES A DIFFERENCE!!! You will hear a slight humming noise. Oh did I tell you it was slight? Yes, you have to lay in your bed and do nothing but try and listen for the noise, at least in my home. August 7, 2010
Rated 5.0 out of 5.0 by Excellent SUPER QUIET!!! We have had other attic fans in the past and they were pretty noisy but they worked so we figured it was just part of the compromise...WOW this thing is REALLY QUIET...the only way I know it was running is if I looked at the vents and they were open or if I went half way up the stairs in the attic. The thermostat works great. As a precaution I put some tape and padding on the power cable coming off the motor because of past experience with other fans where the vibration actually broke through the armor retrospect I don't believe this is necessary. This fan runs so steady and quiet I don't believe it will be an issue. Installation was EASY, the hardest part was running the wire. If you are thinking about this stop thinking and do it...remember in the summer that attic can get to over 150 degrees and at night that is like having a heavy blanket on your whole house...these fans really bring the temp in the attic down and make it easier for your AC's to cool you down. My attic is 1,200 SQFT... I might have another one installed next year to give me some additional air movement. Not necessary but if I can and it makes sense I might. August 21, 2013
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