Those hinges you got oldsmokey are exactly like want I wanted to do. I used these one kind of like it one time but they were to small and the plywood I use bent also. I got some good ideas off those pics. Blaze: I do got a small window unit I could put in, I was thinking if i did that, build a foam board ac duct box around the exaust and run it into a 6-8" inch tube and run it to attic roof vent also. I figured I could always go that route if needed.