Internet #100548465

Store SKU #220344

Master Flow 500 CFM Solar Powered Gable Mount Exhaust Fan

Master Flow

500 CFM Solar Powered Gable Mount Exhaust Fan

  • 5 Year Parts Limited Warranty; 2 Year Labor Limited Warranty
  • No wiring required
  • Effectively ventilates up to 500 sq. ft. of attic space
$22100 /each
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Frequently Bought Together

Product Overview

The Master Flow 500 CFM Solar-Powered Gable Mount Exhaust Fan will help remove excess heat and moisture from your attic to protect your roofing system from premature deterioration. The Solar Powered fan requires no wiring, uses no electricity, and works with your existing intake vents to help lower the temperature in your attic. The 24 volt DC brushless motor provides airflow up to 500 CFM and requires no maintenance. The impact resistant, 10 watt solar panel has a 10 ft. connecting cable included for installation on your roof and a tilt face design for maximum sun exposure. Recommended usage for this unit is one unit per 800 sq. ft. of attic space with a minimum intake ventilation of 240 sq. in. of net free area.

  • No wiring required - uses no electricity
  • Airflow up to 500 CFM
  • ETL Listed
  • Solar powered, operates ONLY in direct sunlight
  • No battery back-up - runs ONLY when panel is in direct sunlight
  • Environmentally friendly operation - Solar!
  • Also available in roof mount version (PRSOLAR)

Info & Guides

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Cut-Out Diameter (in.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Color Family
Color/Finish Family
Galvanized Steel
Power Type
Product Weight (lb.)
Recommended Sq. Ft.
Thermostat Controlled
Ventilation Type
Voltage (volts)
Wattage (watts)
Wildlife Guard

Warranty / Certifications

Manufacturer Warranty
5 year Parts Limited Warranty; 2 year Labor Limited Warranty

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Customer Questions & Answers

Does it have the ability to use electricity to run at night

Asked by: Ed
I bought a 24 volt power brick and a double pole double throw switch. When the sun is out I use solar, when it's not I can switch over.
Answered by: Rich
Date published: 2017-06-20


Asked by: JC77
Yes, I imagine it will run with a 24v battery but, you'd have to hook the solar panel up to the battery to keep it charged otherwise, it'd cost you to recharge the battery every time it got low!
Answered by: OldGuy
Date published: 2016-01-20

Is this 500 CFM solar exhaust fan too much for a 120 square foot stand alone storage shed?

Asked by: sparkyhawaii
Yes, we recommend 1 solar fan for every 800 sq.ft. Please call our Technical Services Group at 800-211-9612 , M-F 8-5 ET.
Answered by: Master Flow
Date published: 2017-06-20

Can wire be extended

Would there be a way to add to the wire length so that I could put the panel in the sun and the fan in a remote location about 30 feet away. Thanks!
Asked by: Glenn
This unit come with 10 feet of wire and as additional 20 feet can be spliced in to a maximum of 30 feet. Please call Technical Services at 800-211-9612, M-F 8A-5P ET, for additional information.
Answered by: Master Flow
Date published: 2016-07-22
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Customer Reviews

500 CFM Solar Powered Gable Mount Exhaust Fan is rated 3.9 out of 5 by 24.
Rated 1 out of 5 by from bought the 500 cfm solar gable fan it will not work it is junk going to send it back it is junk d... bought the 500 cfm solar gable fan it will not work it is junk going to send it back it is junk do let this posted want other people to know this it is 110 my atic and the junk will not work
Date published: 2017-07-03
Rated 5 out of 5 by from solar attic fan this product is pretty nice. although when you see the box the fan is not as big as you think. installation is very easy but I suggest you buy some 2x4's to create a simple box frame to mount it on. in cloudy situations it still works, sun is just flies.its total air output is about 1000cfm. the same a large bathroom fan.the solar panel is 10watts and the motor is 17watts. if your a late morning sleeper or 3rd shifter don't install over a bedroom. during the morning sun it really goes and can be heard as a faint whirling noise through the ceiling.
Date published: 2008-05-21
Rated 5 out of 5 by from Solar attic fan I bought this a few years ago. It did not do so well with only one solar panel, So I bought a second. It works very well to air out the attic at my last place. It dropped the temp in the attic from 160 degrees F to 100 and cut 25-40$ off my cooling bill and the mold cleared up. I have moved to a place without and attic and use it in the foundations to dry it out and also move it to my work shed from time to time. It sure beats stringing electric cords or permanant wiring.
Date published: 2008-06-09
Rated 5 out of 5 by from Pays 4 itself!!! I purchased this solar fan 4 years ago and I couldn't be happier! I live in Phoenix Arizona where the temperatures get up to 116 in the summer so, the temp in my attic got up to around 140 degrees, which could easily cause spontaneous combustion if anything flammable is stored in your attic! Needing more storage, I decided to put an inexpensive particle board floor in the attic and install a pull down staircase in the garage ceiling! Once I placed this fan in the front vent, the temperature has dropped to whatever it is outside and now my wife and I have tons of space to sore out items without the fear of burning down the house! My Heat pump is also in the attic and when the A/C guys come to service the unit, they tell me it's the coolest attic they've ever worked in! This fan also lowers your electric bill if you crack open the staircase and let the fan suck the heat out of your garage as well! The entire house gets cooler because of the fan sucking heat from your ceilings and garage! One quick tip. For my convenience I cut one wire and placed a switch where it's easy to turn on and off during the winter!
Date published: 2015-11-08
Rated 5 out of 5 by from Beyond gable, It works Great as a garage ceiling exhaust fan too! In the hottest part of our Texas summer, my interior garage temperature can get up to 95 degrees. Upon returning home and parking a car in the garage, the temperature can easily get to 105 degrees. So, I cut a 14 inch diameter hole in the garage ceiling, then mounted the 15 inch diameter solar gable fan horizontally, so that it sucks hot air out of the garage and empties into the attic space above the garage. Then, I mounted a solar-powered roof-mount exhaust-fan above the garage. Both solar fans work great, and so quiet! If the sun is shining, the fans are turning. The gable fan and solar panel are solid construction. I only wish the wire cable between the fan and solar panel was longer. The cable is only nine feet long. It really needs to be 15 feet long. I mounted the solar panel on my hip-angle roof with only three inches of cable to spare.
Date published: 2013-04-26
Rated 3 out of 5 by from A little loud Unit was easy enough to install, however it produces a fairly loud humming noise and since its above my bedroom, its noticeable and a bit annoying unless I have my windows A/C unit running. It blows a fair amount of air, however it doesn't turn on as early as my other solar fan. It needs a little more light before it starts up.
Date published: 2014-04-30
Rated 5 out of 5 by from Good for small places Works great with my 2 story, 89 sq ft place! Added an extra solar panel system with the light and saved saved a lot of $$ on an electrical hook up!
Date published: 2010-08-23
Rated 5 out of 5 by from Fan worked as intended. Easy install with the automatic louvers. Even in low light, it still move... Fan worked as intended. Easy install with the automatic louvers. Even in low light, it still moves air.
Date published: 2016-12-06
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