At another thread I detailed how I installed tilt-out (aka pop-out) windows on the rear windows of my Ford van: viewtopic.php?f=13&t=11025
Now that I have some extra airflow, the next step was to make some bug screens so we could actually keep the windows open while camping!
Inspired by the screens Jage has on his pop-out windows (and some photos he kindly took and sent to me), I set out to do basically the same thing on mine. His screens required a bit of sewing, though, creating a small seam under the bolt where the latch attaches to the window. The install below does away with that, creating a seamless screen. This install assumes you have some sort of plastic window trim around the windows.
1. First, remove the plastic trim around the window. This will serve as the frame for your screen. Lay the trim flat on a table, sawhorses, etc. Cut screen to size and lay over the frame. Be sure to leave a lot of extra screen on each side, especially at the bottom. You can trim it later.
2. Using duct tape, tape the screen to the top of the frame. Then, work around the frame, taping the rest of the screen. Important: at the bottom you'll need to add a bit of extra screen in a sort of gusset to allow for the window to pop out. Don't do too big of a gusset, though, as it might create a problem when the window closes. About an inch is good.
3. Now you need to prepare the latch mechanism so you can fit the screen between the latch mech's bolt and the window glass. It's easiest to do if you unscrew the latch from the door. You'll see that there is a blind nut (looks like a button) on bottom, outside of the window, connected to the latch with a screw-eye sort of thing. You have to detach the main part of the latch from the window bolt, and then unscrew the bolt from the window glass.
There is a small plastic pin that attaches the latch to the window bolt eye. Push it out using a small punch (don't lose it!).