need replacement bedroom escape window

You know.. If that happened to me I think I'd replace the window with something other than glass.. Plywood, properly coated with fiberglass (on the outside) and paneling) on the inside) might be a good choice, though I'd want to use the original hinged frame.

Why: Well I wound up hanging a blanket in my bedroom window, blocks light, blocks heat transfer as well, the dual-pane glass did not do that so well.

But that is me.. Some folks like that window as a window. I did not.