VEVOR Shutter Exhaust Fan, 10'' Wall Mount Attic Fan with Temperature Humidity Controller, 820 CFM, 10-Speed Adjustable, Ventilation and Cooling for Greenhouses, Garages, Chicken Coops, ETL Listed

This is a quality unit - very quiet and the digital control is easy to use.You can turn the low- and high- humidity limits off and just use a high-temp fan mode, and you can also set fan speed 1 thru 10. I have mine set to come on at 10-speed at 80 degrees regardless of humidity. My garage temp is definitely lower now and I can't hear the fan (or the closing of the louvers) when I am in my house.

I had a small solar fan in my greenhouse/hoop house for a year now. While it worked, it did not do the job completely. So, this year I purchased this fan for the top end of my greenhouse, and it is great! It runs off of electricity but is controlled by a thermostat. What that means is that it only runs when needed and because this is a 10" fan, it moves hot air quickly. Overheating a greenhouse means that you have fried plants. My greenhouse is actually a hoop house, and the heat gets trapped up at the top of this. The sides of the hoop house roll up to control the heat, but it does not move the heat at the top. This fan will turn on when the upper heat registers my set value and will disperse that upper heat away from the back of my hoop house until the temperature drops back down below my set max range. This has the capabilities to control both the upper and lower heat range, humidity and it even has an alarm for when the heat gets really high. It is durable and has lovers on the outside to prevent rain, snow and bugs from getting inside the greenhouse. It also has different speeds that you can control to ensure your greenhouse is functioning properly.

This fan is quite excellent, but with one fatal flaw:The low temperature range.When you first set up the device, you set ranges (high and low temps and humidities) for which when the environment goes out of the range, the fan will kick on.The problem? The range allowed for the low temperature setting goes from 32F to 158F.Clearly this is a mistake by the manufacturer, but it's ridiculous. In what world might I want a fan to kick on if the temperature goes BELOW 158F? 🤦‍♂️I have the fan in a detached garage, and because of this flaw, I'm going to have to wire it to a light switch so I can turn it off for the winter. (Where the garage will definitely go below 33F... Why would I want the fan running then?)

Works great I have it installed in my shed/shop in a top vent. Took about 5 minutes to install, also is easy and convenient the fan motor blades and circular shroud separates from the self closing vents so I didn’t have to cut any holes just had to unscrew it and could screw them up to the wall individually. Will attatch pics later if I can

I purchased this for my chicken coop to keep air flow.The fan easily ventilates the interior of the 7x8 coop.When turned on the louvres open and is plenty powerful for the space. I also like that it is not loud at all and doesn’t startle the chickens.You can run it by just plugging it in or use the temperature and humidity control, I did not use this part yet because it is still winter.I don’t think I will need the auto settings until the warmer weather arrives.The installation was easy just mount with the included hardware which attaches to the 4 corners.I have 3 other coops that I am considering purchasing different sizes.I think it was exactly what I needed and a great value.It also is not large and unattractive, it fits in perfectly.It is also built well.

Nice fan! Works well and I have had it installed for about 3 months now. Absolutely no issues.

Finally installed. The fan works, but I can't read the control screen - it is extremely dim. I wonder if mine is defective. I have messaged the seller.

The controller is very nice. Good features and easy to program. However the fan is not strong enough to fully open the louvers. At best it opens the louvers maybe 70% thereby reducing the airflow. Not worth the effort to install.