I'd probably go with the fiberglass window screening material, but the plastic mesh netting would be just as good. The key here is to avoid metal screens as these will oxidize and can leave stains. I know the fiberglass ones will not, 'cause that's what I use. Fiberglass screening is a bit more dimensionally stable than the plastic garden mesh I've seen around here. It sags a bit when it gets warm. Fiberglass doesn't.
I'll check out the plastic mesh netting if I don't find any suitable fiberglass. Window screens aren't very common here in Norway, but it's possible that the same product is used for other things as well. I will look around.