Yes, they are steel. The owner had some antique metal windows they wanted to use. So we stripped them, and fitted them to new steel upper cabinets, modifying the hinges and latches so they would work. It is beautiful , and a really "out of the box" idea. really goes well with the tile clad walls.

Love this - I have similar windows and just found this in a google search! Any info you could share re: resources for converting them would be great! Thank you!

We had our metal fabricator, who normally builds stair rails for us, do the work.