There are screens that roll down in a track and secure to the floor to create a bug-free porch. In this instance, they would mount inside the railings, so some sort of minimal additional structure would need to be created to hold the track. We used a system like this in a lake house a number of years ago. I forget the company name, but I'm sure you can google "retractable porch screening" or something like that.

Thank you.

Hello! The porch screens are permanent.

did you use the see through screen or light grey screens - some screen rooms look like a bitt black box from outside - those screens look very light

Can I ask a question from your question? HAHA! Is the white light you have on your porch from Barn Light Electric by chance? Just saw a similar one on there and thought I'd ask -- here's the link to it: http://www.barnlightelectric.com/discount-lighting/discount-barn-lighting/all-weather-gooseneck-farm-light-wall-mount.html