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.
McMaster.com has them. One thing though: If you look closely at the left side of the hinge in the last pic, you'll see that one of the countersunk holes looks different. I ended up cutting off a bit of that side of the hinge and felt I needed to make an extra hole. Also I had to get shorter screws (the silver ones), as the ones supplied were too long. 1631A21 is the part number.
I built myself a grow closet in the garage and I used an exterior door Solved alll my problems...sealed with weatherstripping...lock for security and it appears almost normal in my garage MADMAX
Max...the bug lady at the bar wants to smoke another joint with us.. Come visit and help me with this box, I am putting that scrubber you made in the flower section.