I'm building a coop/sheep barn/greenhouse. I have these windows I was given and would like to use them but just not sure how to frame them. I'd like to use them as hinged either top hinged or side hinged (preferably side hinged so I can open them right up). I need to know what kind of rough opening I should frame for them, they are 17x18. Once I have the rough opening done, I need to know how to frame the window ie hang it, window sill etc. Does anyone have a good tutorial for this?