>Same setup for winter? Just close bottom screen and add styrofoam to the top?
It's nice to reduce the top entrance. I use a piece of screen molding that is 2" short of the width of the opening with one nail in the center to make a pivot. The Styrofoam is a good idea. I haven't done it for the last six years or so, mostly because most of that time I wasn't around, but also the price of Styrofoam has skyrocketed in recent times...