A closer view of the window.... The windows is Plexiglas, piano hinge is stainless steel, the hinge screws are screwed into a 1/8 x 1/2 aluminum bar. The aluminum channels are 3/8 x 1/2. There are probably twice as many aluminum pop rivets as necessary. The latches are from a work project long ago. It seemed a shame to just throw them away when I might be able to find a use for them and, what do you know, 25 years later, I did. The seal is by Trim Lok. It's EPDM closed cell .62" wide x .38 high with a presure sensitive adhesive that I got from Zoro.com
The window in the open position.... Initially I was planning on some kind of lever with a roller to ride in the channels to open the window. That's the origin of the side channels. This was getting too complex and it occured to me that I could just push the window open and put a stick in it. I hinged the screen and made a fancy stick. I actually made two fancy sticks, a long one and a short one.
Inside of the door... I made a screen frame from 3/4 x 3/4 poplar and used the table saw to cut a groove for the spline I had leftover from replacing the sliding door screen.
I've had the camper on the road twice - both times in rainstorms. The window has not leaked.
