Yeah, that's what I thought. My plan is just for horizontal baffles, with the noseeum netting as well.

My current one is tappered at the bottom, still undecided if I'm going to go that way again or not. I do like the snap closures, easy to add, plastic ones are lightweight.
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Life should not be a journey to the grave with the intent of arriving safely in a well preserved body, but to skid in broadside, thoroughly used up, worn out, and loudly proclaiming Wow! What a Ride!