For a couple reasons I need to replace the door on my small pre-manufactured shed. Any idea on where I might purchase a similar style replacement and how I'd do it? The rough opening is 92 1/4" by 72" (two doors). I've attached a few pictures. I have no idea where I could find similar doors. I'm also not sure how to get the old one off. Each side has a full height hinge that I can only see the half inside the door frame. The other half attached to the building is behind the siding and some trim around the door opening. I'm guessing I have to remove this trim and hope the hinge isn't riveted to the building?