A little OT I have been wanting to replace the original windows in my house for a while. I wanted windows that fit the house's character,they needed to look and open like the 1940's windows. Last december I contacted a friend of mine who works for a window shop. He came over measured up and got the right size for the hole. I got some custom Milguard wood clad windows, dual pain with gas filled and uv protection. They are fiberglass and came painted to the color of choice. Best thing I have done to the house yet. No more cold nights, no more drafts. Here's some before and after pic's.