We have the screens that are four panels and are slid to either side manually to open. They are, I believe the least expensive way to go, but have some drawbacks.
If you park your car in the garage, it is more difficult backing out because entrance width is about 30% more narrow. Gotta be real careful.
They come with several types of screening. If you get the type that allows privacy, you really cut down on the amount of air that flows easily into the garage.
They are not automatic, you always see them, they can be easily removed and stored inside in the event if a hurricane.
Hope this helps a bit
Bob
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