iPower 20-Inch Square Aluminum Automatic Gravity Shutter Louver Vent, Silver,2-Pack

These 12” shutters work perfectly with my dual solar fan system I purchased from OmniHW. The shutters paired up perfectly with the fans to provide protection from rain. The only pain was removing the blue protective film on the blades of the shutters. I recommend the company just apply a rectangular piece of film to only the front of the shutter blades. That would provide protection from scratches and be far easier for the customer to remove. I mounted the shutters and fans using additional greenhouse channel uprights and 1/8 thick aluminum Angle. The shutters are quiet and open an close easily even when the fans aren’t running at full power. Very thick frame on the back sides makes these shutters sturdy. The rear has many mounting holes that can adapt to different sized fasteners. I added washers to eliminate vibration. Very happy customer!

Easy to install, everything works as advertised. I installed this in my workshop and it really moves air.

I saw few negative comments about this product. Honestly this is well made product and shipped carefully packaged. I believe that the blue color is to prevent annoying reflections and to protect aluminum from corrosion damage. I like this product and recommend it.

perfect addition for my exhaust fan

Perfect fit to what we bought it for