If the area just outside the porch would not be impeded by out swinging casement windows, those give a wonderfully open feel.

Thank you for responding so quickly lisaam. There is nothing impeding the space, in fact it is quite a drop to the ground given the elevation of our back yard. I have been so spoiled by the feel of these current screen windows that I want to preserve as much of that as possible.

We have an apartment over our garage with casement windows. i love being up there with the windows open. you’ll keep the wide open feeling and breeze will still blow through.

Reality is that at 58" wide you aren't going to be installing a single panel casement window. Even if you can find someone who makes one that wide, it simply is a very bad idea.

Dual panel casements are very popular, and would fit what you are looking for, but the most common style of dual panel casement has a column in the middle of the opening that is going to affect your view. I don't think that is the look that you are going for.

If you aren't fond of the middle column you could opt for a French casement that removes the center column. French casements are not nearly as common and are going to up the price from a standard casement, but I suspect is what you have in mind.

Another possible option is a folding or accordion window. These are pretty cool, but can be pricey.

What if you combined a fixed pane of glass in the middle and two pairs of casements on either side on that wall?

Otherwise, you could do all fixed panes on that wall and operable pairs of casement on the two other walls. What do those other two walls have now?

All great comments, thank you. A friend mentioned the accordian windows, assuming they come with screens. And yes, probably pricey but worth looking into. Here are the other two sides of the porch, which you enter through double french doors in the kitchen.

Gorgeous view!

Thanks. Trying my best to preserve it!

I noticed this (partially open) sliding window at a restaurant recently. This is about as simple as it comes but that may be OK in this case.

It will give you the most glass area with the least obstruction for sure for sure.

What did you end up doing?

how did you insulate/ heat the space?

Thank you for following up Richard. We went with large Anderson windows that crank out to catch those warm breezes. We also made an interesting ceiling. Our builder basically took each side of the existing porch apart, one side at a time, and insulated the walls and the ceiling. We put a heat pump in the room so it is very comfortable in the winter. All told, it was a successful project and we love the room.

Gorgeous! I'm in this same conundrum, I was going to go with sliding because it seemed like a pain to go around and crank so many windows open and then closed again if weather comes through. Have you found that to be an issue?

Actually,on each of the 3 sides, the middle window is like a picture window and does not open. The other smaller windows do crank out. So it was a way to have both the view and the breezes. Hope this helps.

Your room turned out very very nice!

Thank you, we love it.