I'm redoing the interiors of Solitude to match better the exterior buildings. Does anyone know of any? I've searched through most of the window pieces to little avail.

There is SMdCWinSol03 which is used in the Bards College and Blue Palace, but it's too regal for say, the Winking Skeever. This is where being a Max user instead of a Maya user would be handy

How about WRIntCastleWallStrWin01Double?

Edit: or maybe you could do something with WRIntCastleWallStrWin01, ImpWindow01, or ImpExtWindow01?