[villagetinker]

I have a fan in the garage, and I agree completely with previous post. My garage door was insulated and had windows, so I removed the windows and installed screens, all was well until one storm about 2 weeks ago, had significant rain inside the garage. So I went on a search for suitable vents, and never found any. However, I was able to find plastic (aka Lexan) that is 20 times stronger than glass, which I cut to size, and then cut a hole in the center for soffit vents and screen. The result is plenty of air flow, I still get light in the garage, and so far no rain!
Here are some photos of my installation.