Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: can I put one on each gable vent in my attic? I have two. I would make so both are blowing out.
Document: the production was delivered fast, before I knew it, it was delivered, came in perfect condition, then it was very easy to install, just connect to 110 volt, put it in the desired area like attic vent, set temp and done, turned on when it got to desired temp, not to load with good insulation, can barely here it.. also put one in my garage and it lower the temp in the garage by ten degress..  best thing i did... thanks gable
APPLICATION:  Attic gable end fan mounted in south gable of my house in central Florida. It was installed 8/2005 and quit working 9/2008. The house is 21 years old with two gable end attic vents. Total fans so far:  south end I am installing my fourth, north end the second one is still running.SHORT LIFE:  This unit only gave me 3 years life.
Don't buy this fan it won't pull air out of your attic. I felt around expecting air to be sucked in the plastic mount because why else would they make something that blows air out? I felt my nearest open vent and air was not coming in because the fan did not push air out, it goes out the plastic mount.I talked to their CS who insists I did not have enough open intake vents but that is just their excuse.
I have two other attic fans of this size. This one is definitely LOUDER than the other two. At first I really liked the housing, as it was more substantial than the others which were sheet metal, but after just a couple days - I can hear this thing inside my house (it is mounted in the garage). Also the lead on the thermostat is a bit short, making placement a bit more difficult than other models I have.
The product was easy to install and arrived timely. I would recommend this product for those who are looking to cool the upstairs of their homes. I have not had it long enough to give my in put on the life of the product.
Purchased the vent to alleviate heat collection in the attic.Mounting and electrical connections were easy, but time consuming.After verifying placement, electrical service, I found the unitthermometer would not work at any temperature setting. The unit was basically non-functional right out of the box.I will not buy another unit. My time and efforts were wasted. $$$$ wasted.
Get this! Best way to save on air conditioning and thus electric useage. This is an ecologically sound investment. Reduces attic temperature dramatically with subsequent reduction in temperature inside your house. Ceilings adjacent to attic conduct heat proportionally to the temperature in the attic. No other device reduces that temperature more effectively than an attic fan. And a gable end fan is without a doubt the most effective type. It's much more effective than a roof vent fan as the volume of air moved is greater.
This is my third fan over the past 7-8 years. It is in the gable of my not-so-well insulated 800 square feet garage. In the heat of the summer it may run 18 hours. But they are light and easy to install, and even with paying shipping charges this purchase was cheaper than my local Home Improvement stores would have been.
This fan was easy to install. The cutout template for the fan was a little too big, so I had to seal it with RTV. I had to replace the gable screens with gutter screen to allow for the airflow demand.The fan does keep the attic much cooler now.
Purchased the fan for our pool house to push the hot air out. Works great  and it is pretty quiet . For an attic fan I don't think you would even hear it.
Answer: yes